<?php
/**
 * ContactsApi
 * PHP version 5
 *
 * @category Class
 * @package  SendinBlue\Client
 * @author   Swagger Codegen team
 * @link     https://github.com/swagger-api/swagger-codegen
 */

/**
 * SendinBlue API
 *
 * SendinBlue provide a RESTFul API that can be used with any languages. With this API, you will be able to :   - Manage your campaigns and get the statistics   - Manage your contacts   - Send transactional Emails and SMS   - and much more...  You can download our wrappers at https://github.com/orgs/sendinblue  **Possible responses**   | Code | Message |   | :-------------: | ------------- |   | 200  | OK. Successful Request  |   | 201  | OK. Successful Creation |   | 202  | OK. Request accepted |   | 204  | OK. Successful Update/Deletion  |   | 400  | Error. Bad Request  |   | 401  | Error. Authentication Needed  |   | 402  | Error. Not enough credit, plan upgrade needed  |   | 403  | Error. Permission denied  |   | 404  | Error. Object does not exist |   | 405  | Error. Method not allowed  |   | 406  | Error. Not Acceptable  |
 *
 * OpenAPI spec version: 3.0.0
 * Contact: contact@sendinblue.com
 * Generated by: https://github.com/swagger-api/swagger-codegen.git
 * Swagger Codegen version: 2.4.12
 */

/**
 * NOTE: This class is auto generated by the swagger code generator program.
 * https://github.com/swagger-api/swagger-codegen
 * Do not edit the class manually.
 */

namespace SendinBlue\Client\Api;

use GuzzleHttp\Client;
use GuzzleHttp\ClientInterface;
use GuzzleHttp\Exception\RequestException;
use GuzzleHttp\Psr7\MultipartStream;
use GuzzleHttp\Psr7\Request;
use GuzzleHttp\RequestOptions;
use SendinBlue\Client\ApiException;
use SendinBlue\Client\Configuration;
use SendinBlue\Client\HeaderSelector;
use SendinBlue\Client\ObjectSerializer;

/**
 * ContactsApi Class Doc Comment
 *
 * @category Class
 * @package  SendinBlue\Client
 * @author   Swagger Codegen team
 * @link     https://github.com/swagger-api/swagger-codegen
 */
class ContactsApi
{
    /**
     * @var ClientInterface
     */
    protected $client;

    /**
     * @var Configuration
     */
    protected $config;

    /**
     * @var HeaderSelector
     */
    protected $headerSelector;

    /**
     * @param ClientInterface $client
     * @param Configuration   $config
     * @param HeaderSelector  $selector
     */
    public function __construct(
        ClientInterface $client = null,
        Configuration $config = null,
        HeaderSelector $selector = null
    ) {
        $this->client = $client ?: new Client();
        $this->config = $config ?: new Configuration();
        $this->headerSelector = $selector ?: new HeaderSelector();
    }

    /**
     * @return Configuration
     */
    public function getConfig()
    {
        return $this->config;
    }

    /**
     * Operation addContactToList
     *
     * Add existing contacts to a list
     *
     * @param  int $listId Id of the list (required)
     * @param  \SendinBlue\Client\Model\AddContactToList $contactEmails Emails addresses OR IDs of the contacts (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\PostContactInfo
     */
    public function addContactToList($listId, $contactEmails)
    {
        list($response) = $this->addContactToListWithHttpInfo($listId, $contactEmails);
        return $response;
    }

    /**
     * Operation addContactToListWithHttpInfo
     *
     * Add existing contacts to a list
     *
     * @param  int $listId Id of the list (required)
     * @param  \SendinBlue\Client\Model\AddContactToList $contactEmails Emails addresses OR IDs of the contacts (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\PostContactInfo, HTTP status code, HTTP response headers (array of strings)
     */
    public function addContactToListWithHttpInfo($listId, $contactEmails)
    {
        $returnType = '\SendinBlue\Client\Model\PostContactInfo';
        $request = $this->addContactToListRequest($listId, $contactEmails);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 201:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\PostContactInfo',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation addContactToListAsync
     *
     * Add existing contacts to a list
     *
     * @param  int $listId Id of the list (required)
     * @param  \SendinBlue\Client\Model\AddContactToList $contactEmails Emails addresses OR IDs of the contacts (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function addContactToListAsync($listId, $contactEmails)
    {
        return $this->addContactToListAsyncWithHttpInfo($listId, $contactEmails)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation addContactToListAsyncWithHttpInfo
     *
     * Add existing contacts to a list
     *
     * @param  int $listId Id of the list (required)
     * @param  \SendinBlue\Client\Model\AddContactToList $contactEmails Emails addresses OR IDs of the contacts (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function addContactToListAsyncWithHttpInfo($listId, $contactEmails)
    {
        $returnType = '\SendinBlue\Client\Model\PostContactInfo';
        $request = $this->addContactToListRequest($listId, $contactEmails);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'addContactToList'
     *
     * @param  int $listId Id of the list (required)
     * @param  \SendinBlue\Client\Model\AddContactToList $contactEmails Emails addresses OR IDs of the contacts (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function addContactToListRequest($listId, $contactEmails)
    {
        // verify the required parameter 'listId' is set
        if ($listId === null || (is_array($listId) && count($listId) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $listId when calling addContactToList'
            );
        }
        // verify the required parameter 'contactEmails' is set
        if ($contactEmails === null || (is_array($contactEmails) && count($contactEmails) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $contactEmails when calling addContactToList'
            );
        }

        $resourcePath = '/contacts/lists/{listId}/contacts/add';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;


        // path params
        if ($listId !== null) {
            $resourcePath = str_replace(
                '{' . 'listId' . '}',
                ObjectSerializer::toPathValue($listId),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;
        if (isset($contactEmails)) {
            $_tempBody = $contactEmails;
        }

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'POST',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation createAttribute
     *
     * Create contact attribute
     *
     * @param  string $attributeCategory Category of the attribute (required)
     * @param  string $attributeName Name of the attribute (required)
     * @param  \SendinBlue\Client\Model\CreateAttribute $createAttribute Values to create an attribute (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return void
     */
    public function createAttribute($attributeCategory, $attributeName, $createAttribute)
    {
        $this->createAttributeWithHttpInfo($attributeCategory, $attributeName, $createAttribute);
    }

    /**
     * Operation createAttributeWithHttpInfo
     *
     * Create contact attribute
     *
     * @param  string $attributeCategory Category of the attribute (required)
     * @param  string $attributeName Name of the attribute (required)
     * @param  \SendinBlue\Client\Model\CreateAttribute $createAttribute Values to create an attribute (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of null, HTTP status code, HTTP response headers (array of strings)
     */
    public function createAttributeWithHttpInfo($attributeCategory, $attributeName, $createAttribute)
    {
        $returnType = '';
        $request = $this->createAttributeRequest($attributeCategory, $attributeName, $createAttribute);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            return [null, $statusCode, $response->getHeaders()];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation createAttributeAsync
     *
     * Create contact attribute
     *
     * @param  string $attributeCategory Category of the attribute (required)
     * @param  string $attributeName Name of the attribute (required)
     * @param  \SendinBlue\Client\Model\CreateAttribute $createAttribute Values to create an attribute (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function createAttributeAsync($attributeCategory, $attributeName, $createAttribute)
    {
        return $this->createAttributeAsyncWithHttpInfo($attributeCategory, $attributeName, $createAttribute)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation createAttributeAsyncWithHttpInfo
     *
     * Create contact attribute
     *
     * @param  string $attributeCategory Category of the attribute (required)
     * @param  string $attributeName Name of the attribute (required)
     * @param  \SendinBlue\Client\Model\CreateAttribute $createAttribute Values to create an attribute (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function createAttributeAsyncWithHttpInfo($attributeCategory, $attributeName, $createAttribute)
    {
        $returnType = '';
        $request = $this->createAttributeRequest($attributeCategory, $attributeName, $createAttribute);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    return [null, $response->getStatusCode(), $response->getHeaders()];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'createAttribute'
     *
     * @param  string $attributeCategory Category of the attribute (required)
     * @param  string $attributeName Name of the attribute (required)
     * @param  \SendinBlue\Client\Model\CreateAttribute $createAttribute Values to create an attribute (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function createAttributeRequest($attributeCategory, $attributeName, $createAttribute)
    {
        // verify the required parameter 'attributeCategory' is set
        if ($attributeCategory === null || (is_array($attributeCategory) && count($attributeCategory) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $attributeCategory when calling createAttribute'
            );
        }
        // verify the required parameter 'attributeName' is set
        if ($attributeName === null || (is_array($attributeName) && count($attributeName) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $attributeName when calling createAttribute'
            );
        }
        // verify the required parameter 'createAttribute' is set
        if ($createAttribute === null || (is_array($createAttribute) && count($createAttribute) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $createAttribute when calling createAttribute'
            );
        }

        $resourcePath = '/contacts/attributes/{attributeCategory}/{attributeName}';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;


        // path params
        if ($attributeCategory !== null) {
            $resourcePath = str_replace(
                '{' . 'attributeCategory' . '}',
                ObjectSerializer::toPathValue($attributeCategory),
                $resourcePath
            );
        }
        // path params
        if ($attributeName !== null) {
            $resourcePath = str_replace(
                '{' . 'attributeName' . '}',
                ObjectSerializer::toPathValue($attributeName),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;
        if (isset($createAttribute)) {
            $_tempBody = $createAttribute;
        }

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'POST',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation createContact
     *
     * Create a contact
     *
     * @param  \SendinBlue\Client\Model\CreateContact $createContact Values to create a contact (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\CreateUpdateContactModel
     */
    public function createContact($createContact)
    {
        list($response) = $this->createContactWithHttpInfo($createContact);
        return $response;
    }

    /**
     * Operation createContactWithHttpInfo
     *
     * Create a contact
     *
     * @param  \SendinBlue\Client\Model\CreateContact $createContact Values to create a contact (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\CreateUpdateContactModel, HTTP status code, HTTP response headers (array of strings)
     */
    public function createContactWithHttpInfo($createContact)
    {
        $returnType = '\SendinBlue\Client\Model\CreateUpdateContactModel';
        $request = $this->createContactRequest($createContact);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 201:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\CreateUpdateContactModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 204:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\CreateUpdateContactModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation createContactAsync
     *
     * Create a contact
     *
     * @param  \SendinBlue\Client\Model\CreateContact $createContact Values to create a contact (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function createContactAsync($createContact)
    {
        return $this->createContactAsyncWithHttpInfo($createContact)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation createContactAsyncWithHttpInfo
     *
     * Create a contact
     *
     * @param  \SendinBlue\Client\Model\CreateContact $createContact Values to create a contact (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function createContactAsyncWithHttpInfo($createContact)
    {
        $returnType = '\SendinBlue\Client\Model\CreateUpdateContactModel';
        $request = $this->createContactRequest($createContact);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'createContact'
     *
     * @param  \SendinBlue\Client\Model\CreateContact $createContact Values to create a contact (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function createContactRequest($createContact)
    {
        // verify the required parameter 'createContact' is set
        if ($createContact === null || (is_array($createContact) && count($createContact) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $createContact when calling createContact'
            );
        }

        $resourcePath = '/contacts';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;



        // body params
        $_tempBody = null;
        if (isset($createContact)) {
            $_tempBody = $createContact;
        }

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'POST',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation createDoiContact
     *
     * Create Contact via DOI (Double-Opt-In) Flow
     *
     * @param  \SendinBlue\Client\Model\CreateDoiContact $createDoiContact Values to create the Double opt-in (DOI) contact (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return void
     */
    public function createDoiContact($createDoiContact)
    {
        $this->createDoiContactWithHttpInfo($createDoiContact);
    }

    /**
     * Operation createDoiContactWithHttpInfo
     *
     * Create Contact via DOI (Double-Opt-In) Flow
     *
     * @param  \SendinBlue\Client\Model\CreateDoiContact $createDoiContact Values to create the Double opt-in (DOI) contact (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of null, HTTP status code, HTTP response headers (array of strings)
     */
    public function createDoiContactWithHttpInfo($createDoiContact)
    {
        $returnType = '';
        $request = $this->createDoiContactRequest($createDoiContact);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            return [null, $statusCode, $response->getHeaders()];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation createDoiContactAsync
     *
     * Create Contact via DOI (Double-Opt-In) Flow
     *
     * @param  \SendinBlue\Client\Model\CreateDoiContact $createDoiContact Values to create the Double opt-in (DOI) contact (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function createDoiContactAsync($createDoiContact)
    {
        return $this->createDoiContactAsyncWithHttpInfo($createDoiContact)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation createDoiContactAsyncWithHttpInfo
     *
     * Create Contact via DOI (Double-Opt-In) Flow
     *
     * @param  \SendinBlue\Client\Model\CreateDoiContact $createDoiContact Values to create the Double opt-in (DOI) contact (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function createDoiContactAsyncWithHttpInfo($createDoiContact)
    {
        $returnType = '';
        $request = $this->createDoiContactRequest($createDoiContact);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    return [null, $response->getStatusCode(), $response->getHeaders()];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'createDoiContact'
     *
     * @param  \SendinBlue\Client\Model\CreateDoiContact $createDoiContact Values to create the Double opt-in (DOI) contact (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function createDoiContactRequest($createDoiContact)
    {
        // verify the required parameter 'createDoiContact' is set
        if ($createDoiContact === null || (is_array($createDoiContact) && count($createDoiContact) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $createDoiContact when calling createDoiContact'
            );
        }

        $resourcePath = '/contacts/doubleOptinConfirmation';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;



        // body params
        $_tempBody = null;
        if (isset($createDoiContact)) {
            $_tempBody = $createDoiContact;
        }

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'POST',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation createFolder
     *
     * Create a folder
     *
     * @param  \SendinBlue\Client\Model\CreateUpdateFolder $createFolder Name of the folder (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\CreateModel
     */
    public function createFolder($createFolder)
    {
        list($response) = $this->createFolderWithHttpInfo($createFolder);
        return $response;
    }

    /**
     * Operation createFolderWithHttpInfo
     *
     * Create a folder
     *
     * @param  \SendinBlue\Client\Model\CreateUpdateFolder $createFolder Name of the folder (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\CreateModel, HTTP status code, HTTP response headers (array of strings)
     */
    public function createFolderWithHttpInfo($createFolder)
    {
        $returnType = '\SendinBlue\Client\Model\CreateModel';
        $request = $this->createFolderRequest($createFolder);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 201:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\CreateModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation createFolderAsync
     *
     * Create a folder
     *
     * @param  \SendinBlue\Client\Model\CreateUpdateFolder $createFolder Name of the folder (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function createFolderAsync($createFolder)
    {
        return $this->createFolderAsyncWithHttpInfo($createFolder)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation createFolderAsyncWithHttpInfo
     *
     * Create a folder
     *
     * @param  \SendinBlue\Client\Model\CreateUpdateFolder $createFolder Name of the folder (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function createFolderAsyncWithHttpInfo($createFolder)
    {
        $returnType = '\SendinBlue\Client\Model\CreateModel';
        $request = $this->createFolderRequest($createFolder);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'createFolder'
     *
     * @param  \SendinBlue\Client\Model\CreateUpdateFolder $createFolder Name of the folder (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function createFolderRequest($createFolder)
    {
        // verify the required parameter 'createFolder' is set
        if ($createFolder === null || (is_array($createFolder) && count($createFolder) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $createFolder when calling createFolder'
            );
        }

        $resourcePath = '/contacts/folders';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;



        // body params
        $_tempBody = null;
        if (isset($createFolder)) {
            $_tempBody = $createFolder;
        }

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'POST',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation createList
     *
     * Create a list
     *
     * @param  \SendinBlue\Client\Model\CreateList $createList Values to create a list (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\CreateModel
     */
    public function createList($createList)
    {
        list($response) = $this->createListWithHttpInfo($createList);
        return $response;
    }

    /**
     * Operation createListWithHttpInfo
     *
     * Create a list
     *
     * @param  \SendinBlue\Client\Model\CreateList $createList Values to create a list (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\CreateModel, HTTP status code, HTTP response headers (array of strings)
     */
    public function createListWithHttpInfo($createList)
    {
        $returnType = '\SendinBlue\Client\Model\CreateModel';
        $request = $this->createListRequest($createList);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 201:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\CreateModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation createListAsync
     *
     * Create a list
     *
     * @param  \SendinBlue\Client\Model\CreateList $createList Values to create a list (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function createListAsync($createList)
    {
        return $this->createListAsyncWithHttpInfo($createList)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation createListAsyncWithHttpInfo
     *
     * Create a list
     *
     * @param  \SendinBlue\Client\Model\CreateList $createList Values to create a list (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function createListAsyncWithHttpInfo($createList)
    {
        $returnType = '\SendinBlue\Client\Model\CreateModel';
        $request = $this->createListRequest($createList);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'createList'
     *
     * @param  \SendinBlue\Client\Model\CreateList $createList Values to create a list (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function createListRequest($createList)
    {
        // verify the required parameter 'createList' is set
        if ($createList === null || (is_array($createList) && count($createList) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $createList when calling createList'
            );
        }

        $resourcePath = '/contacts/lists';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;



        // body params
        $_tempBody = null;
        if (isset($createList)) {
            $_tempBody = $createList;
        }

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'POST',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation deleteAttribute
     *
     * Delete an attribute
     *
     * @param  string $attributeCategory Category of the attribute (required)
     * @param  string $attributeName Name of the existing attribute (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return void
     */
    public function deleteAttribute($attributeCategory, $attributeName)
    {
        $this->deleteAttributeWithHttpInfo($attributeCategory, $attributeName);
    }

    /**
     * Operation deleteAttributeWithHttpInfo
     *
     * Delete an attribute
     *
     * @param  string $attributeCategory Category of the attribute (required)
     * @param  string $attributeName Name of the existing attribute (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of null, HTTP status code, HTTP response headers (array of strings)
     */
    public function deleteAttributeWithHttpInfo($attributeCategory, $attributeName)
    {
        $returnType = '';
        $request = $this->deleteAttributeRequest($attributeCategory, $attributeName);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            return [null, $statusCode, $response->getHeaders()];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation deleteAttributeAsync
     *
     * Delete an attribute
     *
     * @param  string $attributeCategory Category of the attribute (required)
     * @param  string $attributeName Name of the existing attribute (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function deleteAttributeAsync($attributeCategory, $attributeName)
    {
        return $this->deleteAttributeAsyncWithHttpInfo($attributeCategory, $attributeName)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation deleteAttributeAsyncWithHttpInfo
     *
     * Delete an attribute
     *
     * @param  string $attributeCategory Category of the attribute (required)
     * @param  string $attributeName Name of the existing attribute (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function deleteAttributeAsyncWithHttpInfo($attributeCategory, $attributeName)
    {
        $returnType = '';
        $request = $this->deleteAttributeRequest($attributeCategory, $attributeName);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    return [null, $response->getStatusCode(), $response->getHeaders()];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'deleteAttribute'
     *
     * @param  string $attributeCategory Category of the attribute (required)
     * @param  string $attributeName Name of the existing attribute (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function deleteAttributeRequest($attributeCategory, $attributeName)
    {
        // verify the required parameter 'attributeCategory' is set
        if ($attributeCategory === null || (is_array($attributeCategory) && count($attributeCategory) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $attributeCategory when calling deleteAttribute'
            );
        }
        // verify the required parameter 'attributeName' is set
        if ($attributeName === null || (is_array($attributeName) && count($attributeName) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $attributeName when calling deleteAttribute'
            );
        }

        $resourcePath = '/contacts/attributes/{attributeCategory}/{attributeName}';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;


        // path params
        if ($attributeCategory !== null) {
            $resourcePath = str_replace(
                '{' . 'attributeCategory' . '}',
                ObjectSerializer::toPathValue($attributeCategory),
                $resourcePath
            );
        }
        // path params
        if ($attributeName !== null) {
            $resourcePath = str_replace(
                '{' . 'attributeName' . '}',
                ObjectSerializer::toPathValue($attributeName),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'DELETE',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation deleteContact
     *
     * Delete a contact
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return void
     */
    public function deleteContact($identifier)
    {
        $this->deleteContactWithHttpInfo($identifier);
    }

    /**
     * Operation deleteContactWithHttpInfo
     *
     * Delete a contact
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of null, HTTP status code, HTTP response headers (array of strings)
     */
    public function deleteContactWithHttpInfo($identifier)
    {
        $returnType = '';
        $request = $this->deleteContactRequest($identifier);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            return [null, $statusCode, $response->getHeaders()];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 405:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation deleteContactAsync
     *
     * Delete a contact
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function deleteContactAsync($identifier)
    {
        return $this->deleteContactAsyncWithHttpInfo($identifier)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation deleteContactAsyncWithHttpInfo
     *
     * Delete a contact
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function deleteContactAsyncWithHttpInfo($identifier)
    {
        $returnType = '';
        $request = $this->deleteContactRequest($identifier);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    return [null, $response->getStatusCode(), $response->getHeaders()];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'deleteContact'
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function deleteContactRequest($identifier)
    {
        // verify the required parameter 'identifier' is set
        if ($identifier === null || (is_array($identifier) && count($identifier) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $identifier when calling deleteContact'
            );
        }

        $resourcePath = '/contacts/{identifier}';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;


        // path params
        if ($identifier !== null) {
            $resourcePath = str_replace(
                '{' . 'identifier' . '}',
                ObjectSerializer::toPathValue($identifier),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'DELETE',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation deleteFolder
     *
     * Delete a folder (and all its lists)
     *
     * @param  int $folderId Id of the folder (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return void
     */
    public function deleteFolder($folderId)
    {
        $this->deleteFolderWithHttpInfo($folderId);
    }

    /**
     * Operation deleteFolderWithHttpInfo
     *
     * Delete a folder (and all its lists)
     *
     * @param  int $folderId Id of the folder (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of null, HTTP status code, HTTP response headers (array of strings)
     */
    public function deleteFolderWithHttpInfo($folderId)
    {
        $returnType = '';
        $request = $this->deleteFolderRequest($folderId);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            return [null, $statusCode, $response->getHeaders()];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation deleteFolderAsync
     *
     * Delete a folder (and all its lists)
     *
     * @param  int $folderId Id of the folder (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function deleteFolderAsync($folderId)
    {
        return $this->deleteFolderAsyncWithHttpInfo($folderId)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation deleteFolderAsyncWithHttpInfo
     *
     * Delete a folder (and all its lists)
     *
     * @param  int $folderId Id of the folder (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function deleteFolderAsyncWithHttpInfo($folderId)
    {
        $returnType = '';
        $request = $this->deleteFolderRequest($folderId);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    return [null, $response->getStatusCode(), $response->getHeaders()];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'deleteFolder'
     *
     * @param  int $folderId Id of the folder (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function deleteFolderRequest($folderId)
    {
        // verify the required parameter 'folderId' is set
        if ($folderId === null || (is_array($folderId) && count($folderId) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $folderId when calling deleteFolder'
            );
        }

        $resourcePath = '/contacts/folders/{folderId}';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;


        // path params
        if ($folderId !== null) {
            $resourcePath = str_replace(
                '{' . 'folderId' . '}',
                ObjectSerializer::toPathValue($folderId),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'DELETE',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation deleteList
     *
     * Delete a list
     *
     * @param  int $listId Id of the list (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return void
     */
    public function deleteList($listId)
    {
        $this->deleteListWithHttpInfo($listId);
    }

    /**
     * Operation deleteListWithHttpInfo
     *
     * Delete a list
     *
     * @param  int $listId Id of the list (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of null, HTTP status code, HTTP response headers (array of strings)
     */
    public function deleteListWithHttpInfo($listId)
    {
        $returnType = '';
        $request = $this->deleteListRequest($listId);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            return [null, $statusCode, $response->getHeaders()];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation deleteListAsync
     *
     * Delete a list
     *
     * @param  int $listId Id of the list (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function deleteListAsync($listId)
    {
        return $this->deleteListAsyncWithHttpInfo($listId)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation deleteListAsyncWithHttpInfo
     *
     * Delete a list
     *
     * @param  int $listId Id of the list (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function deleteListAsyncWithHttpInfo($listId)
    {
        $returnType = '';
        $request = $this->deleteListRequest($listId);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    return [null, $response->getStatusCode(), $response->getHeaders()];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'deleteList'
     *
     * @param  int $listId Id of the list (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function deleteListRequest($listId)
    {
        // verify the required parameter 'listId' is set
        if ($listId === null || (is_array($listId) && count($listId) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $listId when calling deleteList'
            );
        }

        $resourcePath = '/contacts/lists/{listId}';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;


        // path params
        if ($listId !== null) {
            $resourcePath = str_replace(
                '{' . 'listId' . '}',
                ObjectSerializer::toPathValue($listId),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'DELETE',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation getAttributes
     *
     * List all attributes
     *
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\GetAttributes
     */
    public function getAttributes()
    {
        list($response) = $this->getAttributesWithHttpInfo();
        return $response;
    }

    /**
     * Operation getAttributesWithHttpInfo
     *
     * List all attributes
     *
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\GetAttributes, HTTP status code, HTTP response headers (array of strings)
     */
    public function getAttributesWithHttpInfo()
    {
        $returnType = '\SendinBlue\Client\Model\GetAttributes';
        $request = $this->getAttributesRequest();

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 200:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\GetAttributes',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation getAttributesAsync
     *
     * List all attributes
     *
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getAttributesAsync()
    {
        return $this->getAttributesAsyncWithHttpInfo()
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation getAttributesAsyncWithHttpInfo
     *
     * List all attributes
     *
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getAttributesAsyncWithHttpInfo()
    {
        $returnType = '\SendinBlue\Client\Model\GetAttributes';
        $request = $this->getAttributesRequest();

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'getAttributes'
     *
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function getAttributesRequest()
    {

        $resourcePath = '/contacts/attributes';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;



        // body params
        $_tempBody = null;

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'GET',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation getContactInfo
     *
     * Get a contact's details
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact OR its SMS attribute value (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\GetExtendedContactDetails
     */
    public function getContactInfo($identifier)
    {
        list($response) = $this->getContactInfoWithHttpInfo($identifier);
        return $response;
    }

    /**
     * Operation getContactInfoWithHttpInfo
     *
     * Get a contact's details
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact OR its SMS attribute value (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\GetExtendedContactDetails, HTTP status code, HTTP response headers (array of strings)
     */
    public function getContactInfoWithHttpInfo($identifier)
    {
        $returnType = '\SendinBlue\Client\Model\GetExtendedContactDetails';
        $request = $this->getContactInfoRequest($identifier);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 200:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\GetExtendedContactDetails',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation getContactInfoAsync
     *
     * Get a contact's details
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact OR its SMS attribute value (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getContactInfoAsync($identifier)
    {
        return $this->getContactInfoAsyncWithHttpInfo($identifier)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation getContactInfoAsyncWithHttpInfo
     *
     * Get a contact's details
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact OR its SMS attribute value (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getContactInfoAsyncWithHttpInfo($identifier)
    {
        $returnType = '\SendinBlue\Client\Model\GetExtendedContactDetails';
        $request = $this->getContactInfoRequest($identifier);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'getContactInfo'
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact OR its SMS attribute value (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function getContactInfoRequest($identifier)
    {
        // verify the required parameter 'identifier' is set
        if ($identifier === null || (is_array($identifier) && count($identifier) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $identifier when calling getContactInfo'
            );
        }

        $resourcePath = '/contacts/{identifier}';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;


        // path params
        if ($identifier !== null) {
            $resourcePath = str_replace(
                '{' . 'identifier' . '}',
                ObjectSerializer::toPathValue($identifier),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'GET',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation getContactStats
     *
     * Get email campaigns' statistics for a contact
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact (required)
     * @param  string $startDate Mandatory if endDate is used. Starting date (YYYY-MM-DD) of the statistic events specific to campaigns. Must be lower than equal to endDate (optional)
     * @param  string $endDate Mandatory if startDate is used. Ending date (YYYY-MM-DD) of the statistic events specific to campaigns. Must be greater than equal to startDate. Maximum difference between startDate and endDate should not be greater than 90 days (optional)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\GetContactCampaignStats
     */
    public function getContactStats($identifier, $startDate = null, $endDate = null)
    {
        list($response) = $this->getContactStatsWithHttpInfo($identifier, $startDate, $endDate);
        return $response;
    }

    /**
     * Operation getContactStatsWithHttpInfo
     *
     * Get email campaigns' statistics for a contact
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact (required)
     * @param  string $startDate Mandatory if endDate is used. Starting date (YYYY-MM-DD) of the statistic events specific to campaigns. Must be lower than equal to endDate (optional)
     * @param  string $endDate Mandatory if startDate is used. Ending date (YYYY-MM-DD) of the statistic events specific to campaigns. Must be greater than equal to startDate. Maximum difference between startDate and endDate should not be greater than 90 days (optional)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\GetContactCampaignStats, HTTP status code, HTTP response headers (array of strings)
     */
    public function getContactStatsWithHttpInfo($identifier, $startDate = null, $endDate = null)
    {
        $returnType = '\SendinBlue\Client\Model\GetContactCampaignStats';
        $request = $this->getContactStatsRequest($identifier, $startDate, $endDate);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 200:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\GetContactCampaignStats',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation getContactStatsAsync
     *
     * Get email campaigns' statistics for a contact
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact (required)
     * @param  string $startDate Mandatory if endDate is used. Starting date (YYYY-MM-DD) of the statistic events specific to campaigns. Must be lower than equal to endDate (optional)
     * @param  string $endDate Mandatory if startDate is used. Ending date (YYYY-MM-DD) of the statistic events specific to campaigns. Must be greater than equal to startDate. Maximum difference between startDate and endDate should not be greater than 90 days (optional)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getContactStatsAsync($identifier, $startDate = null, $endDate = null)
    {
        return $this->getContactStatsAsyncWithHttpInfo($identifier, $startDate, $endDate)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation getContactStatsAsyncWithHttpInfo
     *
     * Get email campaigns' statistics for a contact
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact (required)
     * @param  string $startDate Mandatory if endDate is used. Starting date (YYYY-MM-DD) of the statistic events specific to campaigns. Must be lower than equal to endDate (optional)
     * @param  string $endDate Mandatory if startDate is used. Ending date (YYYY-MM-DD) of the statistic events specific to campaigns. Must be greater than equal to startDate. Maximum difference between startDate and endDate should not be greater than 90 days (optional)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getContactStatsAsyncWithHttpInfo($identifier, $startDate = null, $endDate = null)
    {
        $returnType = '\SendinBlue\Client\Model\GetContactCampaignStats';
        $request = $this->getContactStatsRequest($identifier, $startDate, $endDate);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'getContactStats'
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact (required)
     * @param  string $startDate Mandatory if endDate is used. Starting date (YYYY-MM-DD) of the statistic events specific to campaigns. Must be lower than equal to endDate (optional)
     * @param  string $endDate Mandatory if startDate is used. Ending date (YYYY-MM-DD) of the statistic events specific to campaigns. Must be greater than equal to startDate. Maximum difference between startDate and endDate should not be greater than 90 days (optional)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function getContactStatsRequest($identifier, $startDate = null, $endDate = null)
    {
        // verify the required parameter 'identifier' is set
        if ($identifier === null || (is_array($identifier) && count($identifier) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $identifier when calling getContactStats'
            );
        }

        $resourcePath = '/contacts/{identifier}/campaignStats';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;

        // query params
        if ($startDate !== null) {
            $queryParams['startDate'] = ObjectSerializer::toQueryValue($startDate);
        }
        // query params
        if ($endDate !== null) {
            $queryParams['endDate'] = ObjectSerializer::toQueryValue($endDate);
        }

        // path params
        if ($identifier !== null) {
            $resourcePath = str_replace(
                '{' . 'identifier' . '}',
                ObjectSerializer::toPathValue($identifier),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'GET',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation getContacts
     *
     * Get all the contacts
     *
     * @param  int $limit Number of documents per page (optional, default to 50)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $modifiedSince Filter (urlencoded) the contacts modified after a given UTC date-time (YYYY-MM-DDTHH:mm:ss.SSSZ). Prefer to pass your timezone in date-time format for accurate result. (optional)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\GetContacts
     */
    public function getContacts($limit = '50', $offset = '0', $modifiedSince = null, $sort = 'desc')
    {
        list($response) = $this->getContactsWithHttpInfo($limit, $offset, $modifiedSince, $sort);
        return $response;
    }

    /**
     * Operation getContactsWithHttpInfo
     *
     * Get all the contacts
     *
     * @param  int $limit Number of documents per page (optional, default to 50)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $modifiedSince Filter (urlencoded) the contacts modified after a given UTC date-time (YYYY-MM-DDTHH:mm:ss.SSSZ). Prefer to pass your timezone in date-time format for accurate result. (optional)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\GetContacts, HTTP status code, HTTP response headers (array of strings)
     */
    public function getContactsWithHttpInfo($limit = '50', $offset = '0', $modifiedSince = null, $sort = 'desc')
    {
        $returnType = '\SendinBlue\Client\Model\GetContacts';
        $request = $this->getContactsRequest($limit, $offset, $modifiedSince, $sort);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 200:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\GetContacts',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation getContactsAsync
     *
     * Get all the contacts
     *
     * @param  int $limit Number of documents per page (optional, default to 50)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $modifiedSince Filter (urlencoded) the contacts modified after a given UTC date-time (YYYY-MM-DDTHH:mm:ss.SSSZ). Prefer to pass your timezone in date-time format for accurate result. (optional)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getContactsAsync($limit = '50', $offset = '0', $modifiedSince = null, $sort = 'desc')
    {
        return $this->getContactsAsyncWithHttpInfo($limit, $offset, $modifiedSince, $sort)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation getContactsAsyncWithHttpInfo
     *
     * Get all the contacts
     *
     * @param  int $limit Number of documents per page (optional, default to 50)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $modifiedSince Filter (urlencoded) the contacts modified after a given UTC date-time (YYYY-MM-DDTHH:mm:ss.SSSZ). Prefer to pass your timezone in date-time format for accurate result. (optional)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getContactsAsyncWithHttpInfo($limit = '50', $offset = '0', $modifiedSince = null, $sort = 'desc')
    {
        $returnType = '\SendinBlue\Client\Model\GetContacts';
        $request = $this->getContactsRequest($limit, $offset, $modifiedSince, $sort);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'getContacts'
     *
     * @param  int $limit Number of documents per page (optional, default to 50)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $modifiedSince Filter (urlencoded) the contacts modified after a given UTC date-time (YYYY-MM-DDTHH:mm:ss.SSSZ). Prefer to pass your timezone in date-time format for accurate result. (optional)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function getContactsRequest($limit = '50', $offset = '0', $modifiedSince = null, $sort = 'desc')
    {
        if ($limit !== null && $limit > 1000) {
            throw new \InvalidArgumentException('invalid value for "$limit" when calling ContactsApi.getContacts, must be smaller than or equal to 1000.');
        }


        $resourcePath = '/contacts';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;

        // query params
        if ($limit !== null) {
            $queryParams['limit'] = ObjectSerializer::toQueryValue($limit);
        }
        // query params
        if ($offset !== null) {
            $queryParams['offset'] = ObjectSerializer::toQueryValue($offset);
        }
        // query params
        if ($modifiedSince !== null) {
            $queryParams['modifiedSince'] = ObjectSerializer::toQueryValue($modifiedSince);
        }
        // query params
        if ($sort !== null) {
            $queryParams['sort'] = ObjectSerializer::toQueryValue($sort);
        }


        // body params
        $_tempBody = null;

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'GET',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation getContactsFromList
     *
     * Get contacts in a list
     *
     * @param  int $listId Id of the list (required)
     * @param  string $modifiedSince Filter (urlencoded) the contacts modified after a given UTC date-time (YYYY-MM-DDTHH:mm:ss.SSSZ). Prefer to pass your timezone in date-time format for accurate result. (optional)
     * @param  int $limit Number of documents per page (optional, default to 50)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\GetContacts
     */
    public function getContactsFromList($listId, $modifiedSince = null, $limit = '50', $offset = '0', $sort = 'desc')
    {
        list($response) = $this->getContactsFromListWithHttpInfo($listId, $modifiedSince, $limit, $offset, $sort);
        return $response;
    }

    /**
     * Operation getContactsFromListWithHttpInfo
     *
     * Get contacts in a list
     *
     * @param  int $listId Id of the list (required)
     * @param  string $modifiedSince Filter (urlencoded) the contacts modified after a given UTC date-time (YYYY-MM-DDTHH:mm:ss.SSSZ). Prefer to pass your timezone in date-time format for accurate result. (optional)
     * @param  int $limit Number of documents per page (optional, default to 50)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\GetContacts, HTTP status code, HTTP response headers (array of strings)
     */
    public function getContactsFromListWithHttpInfo($listId, $modifiedSince = null, $limit = '50', $offset = '0', $sort = 'desc')
    {
        $returnType = '\SendinBlue\Client\Model\GetContacts';
        $request = $this->getContactsFromListRequest($listId, $modifiedSince, $limit, $offset, $sort);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 200:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\GetContacts',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation getContactsFromListAsync
     *
     * Get contacts in a list
     *
     * @param  int $listId Id of the list (required)
     * @param  string $modifiedSince Filter (urlencoded) the contacts modified after a given UTC date-time (YYYY-MM-DDTHH:mm:ss.SSSZ). Prefer to pass your timezone in date-time format for accurate result. (optional)
     * @param  int $limit Number of documents per page (optional, default to 50)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getContactsFromListAsync($listId, $modifiedSince = null, $limit = '50', $offset = '0', $sort = 'desc')
    {
        return $this->getContactsFromListAsyncWithHttpInfo($listId, $modifiedSince, $limit, $offset, $sort)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation getContactsFromListAsyncWithHttpInfo
     *
     * Get contacts in a list
     *
     * @param  int $listId Id of the list (required)
     * @param  string $modifiedSince Filter (urlencoded) the contacts modified after a given UTC date-time (YYYY-MM-DDTHH:mm:ss.SSSZ). Prefer to pass your timezone in date-time format for accurate result. (optional)
     * @param  int $limit Number of documents per page (optional, default to 50)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getContactsFromListAsyncWithHttpInfo($listId, $modifiedSince = null, $limit = '50', $offset = '0', $sort = 'desc')
    {
        $returnType = '\SendinBlue\Client\Model\GetContacts';
        $request = $this->getContactsFromListRequest($listId, $modifiedSince, $limit, $offset, $sort);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'getContactsFromList'
     *
     * @param  int $listId Id of the list (required)
     * @param  string $modifiedSince Filter (urlencoded) the contacts modified after a given UTC date-time (YYYY-MM-DDTHH:mm:ss.SSSZ). Prefer to pass your timezone in date-time format for accurate result. (optional)
     * @param  int $limit Number of documents per page (optional, default to 50)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function getContactsFromListRequest($listId, $modifiedSince = null, $limit = '50', $offset = '0', $sort = 'desc')
    {
        // verify the required parameter 'listId' is set
        if ($listId === null || (is_array($listId) && count($listId) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $listId when calling getContactsFromList'
            );
        }
        if ($limit !== null && $limit > 500) {
            throw new \InvalidArgumentException('invalid value for "$limit" when calling ContactsApi.getContactsFromList, must be smaller than or equal to 500.');
        }


        $resourcePath = '/contacts/lists/{listId}/contacts';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;

        // query params
        if ($modifiedSince !== null) {
            $queryParams['modifiedSince'] = ObjectSerializer::toQueryValue($modifiedSince);
        }
        // query params
        if ($limit !== null) {
            $queryParams['limit'] = ObjectSerializer::toQueryValue($limit);
        }
        // query params
        if ($offset !== null) {
            $queryParams['offset'] = ObjectSerializer::toQueryValue($offset);
        }
        // query params
        if ($sort !== null) {
            $queryParams['sort'] = ObjectSerializer::toQueryValue($sort);
        }

        // path params
        if ($listId !== null) {
            $resourcePath = str_replace(
                '{' . 'listId' . '}',
                ObjectSerializer::toPathValue($listId),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'GET',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation getFolder
     *
     * Returns a folder's details
     *
     * @param  int $folderId id of the folder (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\GetFolder
     */
    public function getFolder($folderId)
    {
        list($response) = $this->getFolderWithHttpInfo($folderId);
        return $response;
    }

    /**
     * Operation getFolderWithHttpInfo
     *
     * Returns a folder's details
     *
     * @param  int $folderId id of the folder (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\GetFolder, HTTP status code, HTTP response headers (array of strings)
     */
    public function getFolderWithHttpInfo($folderId)
    {
        $returnType = '\SendinBlue\Client\Model\GetFolder';
        $request = $this->getFolderRequest($folderId);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 200:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\GetFolder',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation getFolderAsync
     *
     * Returns a folder's details
     *
     * @param  int $folderId id of the folder (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getFolderAsync($folderId)
    {
        return $this->getFolderAsyncWithHttpInfo($folderId)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation getFolderAsyncWithHttpInfo
     *
     * Returns a folder's details
     *
     * @param  int $folderId id of the folder (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getFolderAsyncWithHttpInfo($folderId)
    {
        $returnType = '\SendinBlue\Client\Model\GetFolder';
        $request = $this->getFolderRequest($folderId);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'getFolder'
     *
     * @param  int $folderId id of the folder (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function getFolderRequest($folderId)
    {
        // verify the required parameter 'folderId' is set
        if ($folderId === null || (is_array($folderId) && count($folderId) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $folderId when calling getFolder'
            );
        }

        $resourcePath = '/contacts/folders/{folderId}';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;


        // path params
        if ($folderId !== null) {
            $resourcePath = str_replace(
                '{' . 'folderId' . '}',
                ObjectSerializer::toPathValue($folderId),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'GET',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation getFolderLists
     *
     * Get lists in a folder
     *
     * @param  int $folderId Id of the folder (required)
     * @param  int $limit Number of documents per page (optional, default to 10)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\GetFolderLists
     */
    public function getFolderLists($folderId, $limit = '10', $offset = '0', $sort = 'desc')
    {
        list($response) = $this->getFolderListsWithHttpInfo($folderId, $limit, $offset, $sort);
        return $response;
    }

    /**
     * Operation getFolderListsWithHttpInfo
     *
     * Get lists in a folder
     *
     * @param  int $folderId Id of the folder (required)
     * @param  int $limit Number of documents per page (optional, default to 10)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\GetFolderLists, HTTP status code, HTTP response headers (array of strings)
     */
    public function getFolderListsWithHttpInfo($folderId, $limit = '10', $offset = '0', $sort = 'desc')
    {
        $returnType = '\SendinBlue\Client\Model\GetFolderLists';
        $request = $this->getFolderListsRequest($folderId, $limit, $offset, $sort);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 200:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\GetFolderLists',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation getFolderListsAsync
     *
     * Get lists in a folder
     *
     * @param  int $folderId Id of the folder (required)
     * @param  int $limit Number of documents per page (optional, default to 10)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getFolderListsAsync($folderId, $limit = '10', $offset = '0', $sort = 'desc')
    {
        return $this->getFolderListsAsyncWithHttpInfo($folderId, $limit, $offset, $sort)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation getFolderListsAsyncWithHttpInfo
     *
     * Get lists in a folder
     *
     * @param  int $folderId Id of the folder (required)
     * @param  int $limit Number of documents per page (optional, default to 10)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getFolderListsAsyncWithHttpInfo($folderId, $limit = '10', $offset = '0', $sort = 'desc')
    {
        $returnType = '\SendinBlue\Client\Model\GetFolderLists';
        $request = $this->getFolderListsRequest($folderId, $limit, $offset, $sort);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'getFolderLists'
     *
     * @param  int $folderId Id of the folder (required)
     * @param  int $limit Number of documents per page (optional, default to 10)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function getFolderListsRequest($folderId, $limit = '10', $offset = '0', $sort = 'desc')
    {
        // verify the required parameter 'folderId' is set
        if ($folderId === null || (is_array($folderId) && count($folderId) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $folderId when calling getFolderLists'
            );
        }
        if ($limit !== null && $limit > 50) {
            throw new \InvalidArgumentException('invalid value for "$limit" when calling ContactsApi.getFolderLists, must be smaller than or equal to 50.');
        }


        $resourcePath = '/contacts/folders/{folderId}/lists';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;

        // query params
        if ($limit !== null) {
            $queryParams['limit'] = ObjectSerializer::toQueryValue($limit);
        }
        // query params
        if ($offset !== null) {
            $queryParams['offset'] = ObjectSerializer::toQueryValue($offset);
        }
        // query params
        if ($sort !== null) {
            $queryParams['sort'] = ObjectSerializer::toQueryValue($sort);
        }

        // path params
        if ($folderId !== null) {
            $resourcePath = str_replace(
                '{' . 'folderId' . '}',
                ObjectSerializer::toPathValue($folderId),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'GET',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation getFolders
     *
     * Get all folders
     *
     * @param  int $limit Number of documents per page (required)
     * @param  int $offset Index of the first document of the page (required)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\GetFolders
     */
    public function getFolders($limit, $offset, $sort = 'desc')
    {
        list($response) = $this->getFoldersWithHttpInfo($limit, $offset, $sort);
        return $response;
    }

    /**
     * Operation getFoldersWithHttpInfo
     *
     * Get all folders
     *
     * @param  int $limit Number of documents per page (required)
     * @param  int $offset Index of the first document of the page (required)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\GetFolders, HTTP status code, HTTP response headers (array of strings)
     */
    public function getFoldersWithHttpInfo($limit, $offset, $sort = 'desc')
    {
        $returnType = '\SendinBlue\Client\Model\GetFolders';
        $request = $this->getFoldersRequest($limit, $offset, $sort);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 200:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\GetFolders',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation getFoldersAsync
     *
     * Get all folders
     *
     * @param  int $limit Number of documents per page (required)
     * @param  int $offset Index of the first document of the page (required)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getFoldersAsync($limit, $offset, $sort = 'desc')
    {
        return $this->getFoldersAsyncWithHttpInfo($limit, $offset, $sort)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation getFoldersAsyncWithHttpInfo
     *
     * Get all folders
     *
     * @param  int $limit Number of documents per page (required)
     * @param  int $offset Index of the first document of the page (required)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getFoldersAsyncWithHttpInfo($limit, $offset, $sort = 'desc')
    {
        $returnType = '\SendinBlue\Client\Model\GetFolders';
        $request = $this->getFoldersRequest($limit, $offset, $sort);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'getFolders'
     *
     * @param  int $limit Number of documents per page (required)
     * @param  int $offset Index of the first document of the page (required)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function getFoldersRequest($limit, $offset, $sort = 'desc')
    {
        // verify the required parameter 'limit' is set
        if ($limit === null || (is_array($limit) && count($limit) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $limit when calling getFolders'
            );
        }
        if ($limit > 50) {
            throw new \InvalidArgumentException('invalid value for "$limit" when calling ContactsApi.getFolders, must be smaller than or equal to 50.');
        }

        // verify the required parameter 'offset' is set
        if ($offset === null || (is_array($offset) && count($offset) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $offset when calling getFolders'
            );
        }

        $resourcePath = '/contacts/folders';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;

        // query params
        if ($limit !== null) {
            $queryParams['limit'] = ObjectSerializer::toQueryValue($limit);
        }
        // query params
        if ($offset !== null) {
            $queryParams['offset'] = ObjectSerializer::toQueryValue($offset);
        }
        // query params
        if ($sort !== null) {
            $queryParams['sort'] = ObjectSerializer::toQueryValue($sort);
        }


        // body params
        $_tempBody = null;

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'GET',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation getList
     *
     * Get a list's details
     *
     * @param  int $listId Id of the list (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\GetExtendedList
     */
    public function getList($listId)
    {
        list($response) = $this->getListWithHttpInfo($listId);
        return $response;
    }

    /**
     * Operation getListWithHttpInfo
     *
     * Get a list's details
     *
     * @param  int $listId Id of the list (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\GetExtendedList, HTTP status code, HTTP response headers (array of strings)
     */
    public function getListWithHttpInfo($listId)
    {
        $returnType = '\SendinBlue\Client\Model\GetExtendedList';
        $request = $this->getListRequest($listId);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 200:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\GetExtendedList',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation getListAsync
     *
     * Get a list's details
     *
     * @param  int $listId Id of the list (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getListAsync($listId)
    {
        return $this->getListAsyncWithHttpInfo($listId)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation getListAsyncWithHttpInfo
     *
     * Get a list's details
     *
     * @param  int $listId Id of the list (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getListAsyncWithHttpInfo($listId)
    {
        $returnType = '\SendinBlue\Client\Model\GetExtendedList';
        $request = $this->getListRequest($listId);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'getList'
     *
     * @param  int $listId Id of the list (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function getListRequest($listId)
    {
        // verify the required parameter 'listId' is set
        if ($listId === null || (is_array($listId) && count($listId) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $listId when calling getList'
            );
        }

        $resourcePath = '/contacts/lists/{listId}';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;


        // path params
        if ($listId !== null) {
            $resourcePath = str_replace(
                '{' . 'listId' . '}',
                ObjectSerializer::toPathValue($listId),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'GET',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation getLists
     *
     * Get all the lists
     *
     * @param  int $limit Number of documents per page (optional, default to 10)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\GetLists
     */
    public function getLists($limit = '10', $offset = '0', $sort = 'desc')
    {
        list($response) = $this->getListsWithHttpInfo($limit, $offset, $sort);
        return $response;
    }

    /**
     * Operation getListsWithHttpInfo
     *
     * Get all the lists
     *
     * @param  int $limit Number of documents per page (optional, default to 10)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\GetLists, HTTP status code, HTTP response headers (array of strings)
     */
    public function getListsWithHttpInfo($limit = '10', $offset = '0', $sort = 'desc')
    {
        $returnType = '\SendinBlue\Client\Model\GetLists';
        $request = $this->getListsRequest($limit, $offset, $sort);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 200:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\GetLists',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation getListsAsync
     *
     * Get all the lists
     *
     * @param  int $limit Number of documents per page (optional, default to 10)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getListsAsync($limit = '10', $offset = '0', $sort = 'desc')
    {
        return $this->getListsAsyncWithHttpInfo($limit, $offset, $sort)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation getListsAsyncWithHttpInfo
     *
     * Get all the lists
     *
     * @param  int $limit Number of documents per page (optional, default to 10)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function getListsAsyncWithHttpInfo($limit = '10', $offset = '0', $sort = 'desc')
    {
        $returnType = '\SendinBlue\Client\Model\GetLists';
        $request = $this->getListsRequest($limit, $offset, $sort);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'getLists'
     *
     * @param  int $limit Number of documents per page (optional, default to 10)
     * @param  int $offset Index of the first document of the page (optional, default to 0)
     * @param  string $sort Sort the results in the ascending/descending order of record creation. Default order is **descending** if &#x60;sort&#x60; is not passed (optional, default to desc)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function getListsRequest($limit = '10', $offset = '0', $sort = 'desc')
    {
        if ($limit !== null && $limit > 50) {
            throw new \InvalidArgumentException('invalid value for "$limit" when calling ContactsApi.getLists, must be smaller than or equal to 50.');
        }


        $resourcePath = '/contacts/lists';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;

        // query params
        if ($limit !== null) {
            $queryParams['limit'] = ObjectSerializer::toQueryValue($limit);
        }
        // query params
        if ($offset !== null) {
            $queryParams['offset'] = ObjectSerializer::toQueryValue($offset);
        }
        // query params
        if ($sort !== null) {
            $queryParams['sort'] = ObjectSerializer::toQueryValue($sort);
        }


        // body params
        $_tempBody = null;

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'GET',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation importContacts
     *
     * Import contacts
     *
     * @param  \SendinBlue\Client\Model\RequestContactImport $requestContactImport Values to import contacts in Sendinblue. To know more about the expected format, please have a look at &#x60;&#x60;https://help.sendinblue.com/hc/en-us/articles/209499265-Build-contacts-lists-for-your-email-marketing-campaigns&#x60;&#x60; (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\CreatedProcessId
     */
    public function importContacts($requestContactImport)
    {
        list($response) = $this->importContactsWithHttpInfo($requestContactImport);
        return $response;
    }

    /**
     * Operation importContactsWithHttpInfo
     *
     * Import contacts
     *
     * @param  \SendinBlue\Client\Model\RequestContactImport $requestContactImport Values to import contacts in Sendinblue. To know more about the expected format, please have a look at &#x60;&#x60;https://help.sendinblue.com/hc/en-us/articles/209499265-Build-contacts-lists-for-your-email-marketing-campaigns&#x60;&#x60; (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\CreatedProcessId, HTTP status code, HTTP response headers (array of strings)
     */
    public function importContactsWithHttpInfo($requestContactImport)
    {
        $returnType = '\SendinBlue\Client\Model\CreatedProcessId';
        $request = $this->importContactsRequest($requestContactImport);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 202:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\CreatedProcessId',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation importContactsAsync
     *
     * Import contacts
     *
     * @param  \SendinBlue\Client\Model\RequestContactImport $requestContactImport Values to import contacts in Sendinblue. To know more about the expected format, please have a look at &#x60;&#x60;https://help.sendinblue.com/hc/en-us/articles/209499265-Build-contacts-lists-for-your-email-marketing-campaigns&#x60;&#x60; (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function importContactsAsync($requestContactImport)
    {
        return $this->importContactsAsyncWithHttpInfo($requestContactImport)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation importContactsAsyncWithHttpInfo
     *
     * Import contacts
     *
     * @param  \SendinBlue\Client\Model\RequestContactImport $requestContactImport Values to import contacts in Sendinblue. To know more about the expected format, please have a look at &#x60;&#x60;https://help.sendinblue.com/hc/en-us/articles/209499265-Build-contacts-lists-for-your-email-marketing-campaigns&#x60;&#x60; (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function importContactsAsyncWithHttpInfo($requestContactImport)
    {
        $returnType = '\SendinBlue\Client\Model\CreatedProcessId';
        $request = $this->importContactsRequest($requestContactImport);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'importContacts'
     *
     * @param  \SendinBlue\Client\Model\RequestContactImport $requestContactImport Values to import contacts in Sendinblue. To know more about the expected format, please have a look at &#x60;&#x60;https://help.sendinblue.com/hc/en-us/articles/209499265-Build-contacts-lists-for-your-email-marketing-campaigns&#x60;&#x60; (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function importContactsRequest($requestContactImport)
    {
        // verify the required parameter 'requestContactImport' is set
        if ($requestContactImport === null || (is_array($requestContactImport) && count($requestContactImport) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $requestContactImport when calling importContacts'
            );
        }

        $resourcePath = '/contacts/import';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;



        // body params
        $_tempBody = null;
        if (isset($requestContactImport)) {
            $_tempBody = $requestContactImport;
        }

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'POST',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation removeContactFromList
     *
     * Delete a contact from a list
     *
     * @param  int $listId Id of the list (required)
     * @param  \SendinBlue\Client\Model\RemoveContactFromList $contactEmails Emails addresses OR IDs of the contacts (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\PostContactInfo
     */
    public function removeContactFromList($listId, $contactEmails)
    {
        list($response) = $this->removeContactFromListWithHttpInfo($listId, $contactEmails);
        return $response;
    }

    /**
     * Operation removeContactFromListWithHttpInfo
     *
     * Delete a contact from a list
     *
     * @param  int $listId Id of the list (required)
     * @param  \SendinBlue\Client\Model\RemoveContactFromList $contactEmails Emails addresses OR IDs of the contacts (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\PostContactInfo, HTTP status code, HTTP response headers (array of strings)
     */
    public function removeContactFromListWithHttpInfo($listId, $contactEmails)
    {
        $returnType = '\SendinBlue\Client\Model\PostContactInfo';
        $request = $this->removeContactFromListRequest($listId, $contactEmails);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 201:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\PostContactInfo',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation removeContactFromListAsync
     *
     * Delete a contact from a list
     *
     * @param  int $listId Id of the list (required)
     * @param  \SendinBlue\Client\Model\RemoveContactFromList $contactEmails Emails addresses OR IDs of the contacts (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function removeContactFromListAsync($listId, $contactEmails)
    {
        return $this->removeContactFromListAsyncWithHttpInfo($listId, $contactEmails)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation removeContactFromListAsyncWithHttpInfo
     *
     * Delete a contact from a list
     *
     * @param  int $listId Id of the list (required)
     * @param  \SendinBlue\Client\Model\RemoveContactFromList $contactEmails Emails addresses OR IDs of the contacts (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function removeContactFromListAsyncWithHttpInfo($listId, $contactEmails)
    {
        $returnType = '\SendinBlue\Client\Model\PostContactInfo';
        $request = $this->removeContactFromListRequest($listId, $contactEmails);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'removeContactFromList'
     *
     * @param  int $listId Id of the list (required)
     * @param  \SendinBlue\Client\Model\RemoveContactFromList $contactEmails Emails addresses OR IDs of the contacts (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function removeContactFromListRequest($listId, $contactEmails)
    {
        // verify the required parameter 'listId' is set
        if ($listId === null || (is_array($listId) && count($listId) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $listId when calling removeContactFromList'
            );
        }
        // verify the required parameter 'contactEmails' is set
        if ($contactEmails === null || (is_array($contactEmails) && count($contactEmails) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $contactEmails when calling removeContactFromList'
            );
        }

        $resourcePath = '/contacts/lists/{listId}/contacts/remove';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;


        // path params
        if ($listId !== null) {
            $resourcePath = str_replace(
                '{' . 'listId' . '}',
                ObjectSerializer::toPathValue($listId),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;
        if (isset($contactEmails)) {
            $_tempBody = $contactEmails;
        }

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'POST',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation requestContactExport
     *
     * Export contacts
     *
     * @param  \SendinBlue\Client\Model\RequestContactExport $requestContactExport Values to request a contact export (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return \SendinBlue\Client\Model\CreatedProcessId
     */
    public function requestContactExport($requestContactExport)
    {
        list($response) = $this->requestContactExportWithHttpInfo($requestContactExport);
        return $response;
    }

    /**
     * Operation requestContactExportWithHttpInfo
     *
     * Export contacts
     *
     * @param  \SendinBlue\Client\Model\RequestContactExport $requestContactExport Values to request a contact export (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of \SendinBlue\Client\Model\CreatedProcessId, HTTP status code, HTTP response headers (array of strings)
     */
    public function requestContactExportWithHttpInfo($requestContactExport)
    {
        $returnType = '\SendinBlue\Client\Model\CreatedProcessId';
        $request = $this->requestContactExportRequest($requestContactExport);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            $responseBody = $response->getBody();
            if ($returnType === '\SplFileObject') {
                $content = $responseBody; //stream goes to serializer
            } else {
                $content = $responseBody->getContents();
                if ($returnType !== 'string') {
                    $content = json_decode($content);
                }
            }

            return [
                ObjectSerializer::deserialize($content, $returnType, []),
                $response->getStatusCode(),
                $response->getHeaders()
            ];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 202:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\CreatedProcessId',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation requestContactExportAsync
     *
     * Export contacts
     *
     * @param  \SendinBlue\Client\Model\RequestContactExport $requestContactExport Values to request a contact export (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function requestContactExportAsync($requestContactExport)
    {
        return $this->requestContactExportAsyncWithHttpInfo($requestContactExport)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation requestContactExportAsyncWithHttpInfo
     *
     * Export contacts
     *
     * @param  \SendinBlue\Client\Model\RequestContactExport $requestContactExport Values to request a contact export (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function requestContactExportAsyncWithHttpInfo($requestContactExport)
    {
        $returnType = '\SendinBlue\Client\Model\CreatedProcessId';
        $request = $this->requestContactExportRequest($requestContactExport);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    $responseBody = $response->getBody();
                    if ($returnType === '\SplFileObject') {
                        $content = $responseBody; //stream goes to serializer
                    } else {
                        $content = $responseBody->getContents();
                        if ($returnType !== 'string') {
                            $content = json_decode($content);
                        }
                    }

                    return [
                        ObjectSerializer::deserialize($content, $returnType, []),
                        $response->getStatusCode(),
                        $response->getHeaders()
                    ];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'requestContactExport'
     *
     * @param  \SendinBlue\Client\Model\RequestContactExport $requestContactExport Values to request a contact export (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function requestContactExportRequest($requestContactExport)
    {
        // verify the required parameter 'requestContactExport' is set
        if ($requestContactExport === null || (is_array($requestContactExport) && count($requestContactExport) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $requestContactExport when calling requestContactExport'
            );
        }

        $resourcePath = '/contacts/export';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;



        // body params
        $_tempBody = null;
        if (isset($requestContactExport)) {
            $_tempBody = $requestContactExport;
        }

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'POST',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation updateAttribute
     *
     * Update contact attribute
     *
     * @param  string $attributeCategory Category of the attribute (required)
     * @param  string $attributeName Name of the existing attribute (required)
     * @param  \SendinBlue\Client\Model\UpdateAttribute $updateAttribute Values to update an attribute (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return void
     */
    public function updateAttribute($attributeCategory, $attributeName, $updateAttribute)
    {
        $this->updateAttributeWithHttpInfo($attributeCategory, $attributeName, $updateAttribute);
    }

    /**
     * Operation updateAttributeWithHttpInfo
     *
     * Update contact attribute
     *
     * @param  string $attributeCategory Category of the attribute (required)
     * @param  string $attributeName Name of the existing attribute (required)
     * @param  \SendinBlue\Client\Model\UpdateAttribute $updateAttribute Values to update an attribute (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of null, HTTP status code, HTTP response headers (array of strings)
     */
    public function updateAttributeWithHttpInfo($attributeCategory, $attributeName, $updateAttribute)
    {
        $returnType = '';
        $request = $this->updateAttributeRequest($attributeCategory, $attributeName, $updateAttribute);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            return [null, $statusCode, $response->getHeaders()];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation updateAttributeAsync
     *
     * Update contact attribute
     *
     * @param  string $attributeCategory Category of the attribute (required)
     * @param  string $attributeName Name of the existing attribute (required)
     * @param  \SendinBlue\Client\Model\UpdateAttribute $updateAttribute Values to update an attribute (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function updateAttributeAsync($attributeCategory, $attributeName, $updateAttribute)
    {
        return $this->updateAttributeAsyncWithHttpInfo($attributeCategory, $attributeName, $updateAttribute)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation updateAttributeAsyncWithHttpInfo
     *
     * Update contact attribute
     *
     * @param  string $attributeCategory Category of the attribute (required)
     * @param  string $attributeName Name of the existing attribute (required)
     * @param  \SendinBlue\Client\Model\UpdateAttribute $updateAttribute Values to update an attribute (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function updateAttributeAsyncWithHttpInfo($attributeCategory, $attributeName, $updateAttribute)
    {
        $returnType = '';
        $request = $this->updateAttributeRequest($attributeCategory, $attributeName, $updateAttribute);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    return [null, $response->getStatusCode(), $response->getHeaders()];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'updateAttribute'
     *
     * @param  string $attributeCategory Category of the attribute (required)
     * @param  string $attributeName Name of the existing attribute (required)
     * @param  \SendinBlue\Client\Model\UpdateAttribute $updateAttribute Values to update an attribute (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function updateAttributeRequest($attributeCategory, $attributeName, $updateAttribute)
    {
        // verify the required parameter 'attributeCategory' is set
        if ($attributeCategory === null || (is_array($attributeCategory) && count($attributeCategory) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $attributeCategory when calling updateAttribute'
            );
        }
        // verify the required parameter 'attributeName' is set
        if ($attributeName === null || (is_array($attributeName) && count($attributeName) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $attributeName when calling updateAttribute'
            );
        }
        // verify the required parameter 'updateAttribute' is set
        if ($updateAttribute === null || (is_array($updateAttribute) && count($updateAttribute) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $updateAttribute when calling updateAttribute'
            );
        }

        $resourcePath = '/contacts/attributes/{attributeCategory}/{attributeName}';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;


        // path params
        if ($attributeCategory !== null) {
            $resourcePath = str_replace(
                '{' . 'attributeCategory' . '}',
                ObjectSerializer::toPathValue($attributeCategory),
                $resourcePath
            );
        }
        // path params
        if ($attributeName !== null) {
            $resourcePath = str_replace(
                '{' . 'attributeName' . '}',
                ObjectSerializer::toPathValue($attributeName),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;
        if (isset($updateAttribute)) {
            $_tempBody = $updateAttribute;
        }

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'PUT',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation updateBatchContacts
     *
     * Update multiple contacts
     *
     * @param  \SendinBlue\Client\Model\UpdateBatchContacts $updateBatchContacts Values to update multiple contacts (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return void
     */
    public function updateBatchContacts($updateBatchContacts)
    {
        $this->updateBatchContactsWithHttpInfo($updateBatchContacts);
    }

    /**
     * Operation updateBatchContactsWithHttpInfo
     *
     * Update multiple contacts
     *
     * @param  \SendinBlue\Client\Model\UpdateBatchContacts $updateBatchContacts Values to update multiple contacts (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of null, HTTP status code, HTTP response headers (array of strings)
     */
    public function updateBatchContactsWithHttpInfo($updateBatchContacts)
    {
        $returnType = '';
        $request = $this->updateBatchContactsRequest($updateBatchContacts);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            return [null, $statusCode, $response->getHeaders()];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 207:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ComponentsSchemasUpdateBatchContactsModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ComponentsSchemasErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation updateBatchContactsAsync
     *
     * Update multiple contacts
     *
     * @param  \SendinBlue\Client\Model\UpdateBatchContacts $updateBatchContacts Values to update multiple contacts (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function updateBatchContactsAsync($updateBatchContacts)
    {
        return $this->updateBatchContactsAsyncWithHttpInfo($updateBatchContacts)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation updateBatchContactsAsyncWithHttpInfo
     *
     * Update multiple contacts
     *
     * @param  \SendinBlue\Client\Model\UpdateBatchContacts $updateBatchContacts Values to update multiple contacts (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function updateBatchContactsAsyncWithHttpInfo($updateBatchContacts)
    {
        $returnType = '';
        $request = $this->updateBatchContactsRequest($updateBatchContacts);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    return [null, $response->getStatusCode(), $response->getHeaders()];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'updateBatchContacts'
     *
     * @param  \SendinBlue\Client\Model\UpdateBatchContacts $updateBatchContacts Values to update multiple contacts (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function updateBatchContactsRequest($updateBatchContacts)
    {
        // verify the required parameter 'updateBatchContacts' is set
        if ($updateBatchContacts === null || (is_array($updateBatchContacts) && count($updateBatchContacts) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $updateBatchContacts when calling updateBatchContacts'
            );
        }

        $resourcePath = '/contacts/batch';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;



        // body params
        $_tempBody = null;
        if (isset($updateBatchContacts)) {
            $_tempBody = $updateBatchContacts;
        }

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'POST',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation updateContact
     *
     * Update a contact
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact (required)
     * @param  \SendinBlue\Client\Model\UpdateContact $updateContact Values to update a contact (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return void
     */
    public function updateContact($identifier, $updateContact)
    {
        $this->updateContactWithHttpInfo($identifier, $updateContact);
    }

    /**
     * Operation updateContactWithHttpInfo
     *
     * Update a contact
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact (required)
     * @param  \SendinBlue\Client\Model\UpdateContact $updateContact Values to update a contact (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of null, HTTP status code, HTTP response headers (array of strings)
     */
    public function updateContactWithHttpInfo($identifier, $updateContact)
    {
        $returnType = '';
        $request = $this->updateContactRequest($identifier, $updateContact);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            return [null, $statusCode, $response->getHeaders()];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation updateContactAsync
     *
     * Update a contact
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact (required)
     * @param  \SendinBlue\Client\Model\UpdateContact $updateContact Values to update a contact (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function updateContactAsync($identifier, $updateContact)
    {
        return $this->updateContactAsyncWithHttpInfo($identifier, $updateContact)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation updateContactAsyncWithHttpInfo
     *
     * Update a contact
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact (required)
     * @param  \SendinBlue\Client\Model\UpdateContact $updateContact Values to update a contact (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function updateContactAsyncWithHttpInfo($identifier, $updateContact)
    {
        $returnType = '';
        $request = $this->updateContactRequest($identifier, $updateContact);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    return [null, $response->getStatusCode(), $response->getHeaders()];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'updateContact'
     *
     * @param  string $identifier Email (urlencoded) OR ID of the contact (required)
     * @param  \SendinBlue\Client\Model\UpdateContact $updateContact Values to update a contact (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function updateContactRequest($identifier, $updateContact)
    {
        // verify the required parameter 'identifier' is set
        if ($identifier === null || (is_array($identifier) && count($identifier) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $identifier when calling updateContact'
            );
        }
        // verify the required parameter 'updateContact' is set
        if ($updateContact === null || (is_array($updateContact) && count($updateContact) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $updateContact when calling updateContact'
            );
        }

        $resourcePath = '/contacts/{identifier}';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;


        // path params
        if ($identifier !== null) {
            $resourcePath = str_replace(
                '{' . 'identifier' . '}',
                ObjectSerializer::toPathValue($identifier),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;
        if (isset($updateContact)) {
            $_tempBody = $updateContact;
        }

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'PUT',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation updateFolder
     *
     * Update a folder
     *
     * @param  int $folderId Id of the folder (required)
     * @param  \SendinBlue\Client\Model\CreateUpdateFolder $updateFolder Name of the folder (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return void
     */
    public function updateFolder($folderId, $updateFolder)
    {
        $this->updateFolderWithHttpInfo($folderId, $updateFolder);
    }

    /**
     * Operation updateFolderWithHttpInfo
     *
     * Update a folder
     *
     * @param  int $folderId Id of the folder (required)
     * @param  \SendinBlue\Client\Model\CreateUpdateFolder $updateFolder Name of the folder (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of null, HTTP status code, HTTP response headers (array of strings)
     */
    public function updateFolderWithHttpInfo($folderId, $updateFolder)
    {
        $returnType = '';
        $request = $this->updateFolderRequest($folderId, $updateFolder);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            return [null, $statusCode, $response->getHeaders()];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation updateFolderAsync
     *
     * Update a folder
     *
     * @param  int $folderId Id of the folder (required)
     * @param  \SendinBlue\Client\Model\CreateUpdateFolder $updateFolder Name of the folder (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function updateFolderAsync($folderId, $updateFolder)
    {
        return $this->updateFolderAsyncWithHttpInfo($folderId, $updateFolder)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation updateFolderAsyncWithHttpInfo
     *
     * Update a folder
     *
     * @param  int $folderId Id of the folder (required)
     * @param  \SendinBlue\Client\Model\CreateUpdateFolder $updateFolder Name of the folder (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function updateFolderAsyncWithHttpInfo($folderId, $updateFolder)
    {
        $returnType = '';
        $request = $this->updateFolderRequest($folderId, $updateFolder);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    return [null, $response->getStatusCode(), $response->getHeaders()];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'updateFolder'
     *
     * @param  int $folderId Id of the folder (required)
     * @param  \SendinBlue\Client\Model\CreateUpdateFolder $updateFolder Name of the folder (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function updateFolderRequest($folderId, $updateFolder)
    {
        // verify the required parameter 'folderId' is set
        if ($folderId === null || (is_array($folderId) && count($folderId) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $folderId when calling updateFolder'
            );
        }
        // verify the required parameter 'updateFolder' is set
        if ($updateFolder === null || (is_array($updateFolder) && count($updateFolder) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $updateFolder when calling updateFolder'
            );
        }

        $resourcePath = '/contacts/folders/{folderId}';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;


        // path params
        if ($folderId !== null) {
            $resourcePath = str_replace(
                '{' . 'folderId' . '}',
                ObjectSerializer::toPathValue($folderId),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;
        if (isset($updateFolder)) {
            $_tempBody = $updateFolder;
        }

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'PUT',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Operation updateList
     *
     * Update a list
     *
     * @param  int $listId Id of the list (required)
     * @param  \SendinBlue\Client\Model\UpdateList $updateList Values to update a list (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return void
     */
    public function updateList($listId, $updateList)
    {
        $this->updateListWithHttpInfo($listId, $updateList);
    }

    /**
     * Operation updateListWithHttpInfo
     *
     * Update a list
     *
     * @param  int $listId Id of the list (required)
     * @param  \SendinBlue\Client\Model\UpdateList $updateList Values to update a list (required)
     *
     * @throws \SendinBlue\Client\ApiException on non-2xx response
     * @throws \InvalidArgumentException
     * @return array of null, HTTP status code, HTTP response headers (array of strings)
     */
    public function updateListWithHttpInfo($listId, $updateList)
    {
        $returnType = '';
        $request = $this->updateListRequest($listId, $updateList);

        try {
            $options = $this->createHttpClientOption();
            try {
                $response = $this->client->send($request, $options);
            } catch (RequestException $e) {
                throw new ApiException(
                    "[{$e->getCode()}] {$e->getMessage()}",
                    $e->getCode(),
                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
                    $e->getResponse() ? $e->getResponse()->getBody()->getContents() : null
                );
            }

            $statusCode = $response->getStatusCode();

            if ($statusCode < 200 || $statusCode > 299) {
                throw new ApiException(
                    sprintf(
                        '[%d] Error connecting to the API (%s)',
                        $statusCode,
                        $request->getUri()
                    ),
                    $statusCode,
                    $response->getHeaders(),
                    $response->getBody()
                );
            }

            return [null, $statusCode, $response->getHeaders()];

        } catch (ApiException $e) {
            switch ($e->getCode()) {
                case 400:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
                case 404:
                    $data = ObjectSerializer::deserialize(
                        $e->getResponseBody(),
                        '\SendinBlue\Client\Model\ErrorModel',
                        $e->getResponseHeaders()
                    );
                    $e->setResponseObject($data);
                    break;
            }
            throw $e;
        }
    }

    /**
     * Operation updateListAsync
     *
     * Update a list
     *
     * @param  int $listId Id of the list (required)
     * @param  \SendinBlue\Client\Model\UpdateList $updateList Values to update a list (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function updateListAsync($listId, $updateList)
    {
        return $this->updateListAsyncWithHttpInfo($listId, $updateList)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }

    /**
     * Operation updateListAsyncWithHttpInfo
     *
     * Update a list
     *
     * @param  int $listId Id of the list (required)
     * @param  \SendinBlue\Client\Model\UpdateList $updateList Values to update a list (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Promise\PromiseInterface
     */
    public function updateListAsyncWithHttpInfo($listId, $updateList)
    {
        $returnType = '';
        $request = $this->updateListRequest($listId, $updateList);

        return $this->client
            ->sendAsync($request, $this->createHttpClientOption())
            ->then(
                function ($response) use ($returnType) {
                    return [null, $response->getStatusCode(), $response->getHeaders()];
                },
                function ($exception) {
                    $response = $exception->getResponse();
                    $statusCode = $response->getStatusCode();
                    throw new ApiException(
                        sprintf(
                            '[%d] Error connecting to the API (%s)',
                            $statusCode,
                            $exception->getRequest()->getUri()
                        ),
                        $statusCode,
                        $response->getHeaders(),
                        $response->getBody()
                    );
                }
            );
    }

    /**
     * Create request for operation 'updateList'
     *
     * @param  int $listId Id of the list (required)
     * @param  \SendinBlue\Client\Model\UpdateList $updateList Values to update a list (required)
     *
     * @throws \InvalidArgumentException
     * @return \GuzzleHttp\Psr7\Request
     */
    protected function updateListRequest($listId, $updateList)
    {
        // verify the required parameter 'listId' is set
        if ($listId === null || (is_array($listId) && count($listId) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $listId when calling updateList'
            );
        }
        // verify the required parameter 'updateList' is set
        if ($updateList === null || (is_array($updateList) && count($updateList) === 0)) {
            throw new \InvalidArgumentException(
                'Missing the required parameter $updateList when calling updateList'
            );
        }

        $resourcePath = '/contacts/lists/{listId}';
        $formParams = [];
        $queryParams = [];
        $headerParams = [];
        $httpBody = '';
        $multipart = false;


        // path params
        if ($listId !== null) {
            $resourcePath = str_replace(
                '{' . 'listId' . '}',
                ObjectSerializer::toPathValue($listId),
                $resourcePath
            );
        }

        // body params
        $_tempBody = null;
        if (isset($updateList)) {
            $_tempBody = $updateList;
        }

        if ($multipart) {
            $headers = $this->headerSelector->selectHeadersForMultipart(
                ['application/json']
            );
        } else {
            $headers = $this->headerSelector->selectHeaders(
                ['application/json'],
                ['application/json']
            );
        }

        // for model (json/xml)
        if (isset($_tempBody)) {
            // $_tempBody is the method argument, if present
            $httpBody = $_tempBody;
            
            if($headers['Content-Type'] === 'application/json') {
                // \stdClass has no __toString(), so we should encode it manually
                if ($httpBody instanceof \stdClass) {
                    $httpBody = \GuzzleHttp\json_encode($httpBody);
                }
                // array has no __toString(), so we should encode it manually
                if(is_array($httpBody)) {
                    $httpBody = \GuzzleHttp\json_encode(ObjectSerializer::sanitizeForSerialization($httpBody));
                }
            }
        } elseif (count($formParams) > 0) {
            if ($multipart) {
                $multipartContents = [];
                foreach ($formParams as $formParamName => $formParamValue) {
                    $multipartContents[] = [
                        'name' => $formParamName,
                        'contents' => $formParamValue
                    ];
                }
                // for HTTP post (form)
                $httpBody = new MultipartStream($multipartContents);

            } elseif ($headers['Content-Type'] === 'application/json') {
                $httpBody = \GuzzleHttp\json_encode($formParams);

            } else {
                // for HTTP post (form)
                $httpBody = \GuzzleHttp\Psr7\Query::build($formParams);
            }
        }

        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('api-key');
        if ($apiKey !== null) {
            $headers['api-key'] = $apiKey;
        }
        // this endpoint requires API key authentication
        $apiKey = $this->config->getApiKeyWithPrefix('partner-key');
        if ($apiKey !== null) {
            $headers['partner-key'] = $apiKey;
        }

        $defaultHeaders = [];
        if ($this->config->getUserAgent()) {
            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
        }

        $headers = array_merge(
            $defaultHeaders,
            $headerParams,
            $headers
        );

        $query = \GuzzleHttp\Psr7\Query::build($queryParams);
        return new Request(
            'PUT',
            $this->config->getHost() . $resourcePath . ($query ? "?{$query}" : ''),
            $headers,
            $httpBody
        );
    }

    /**
     * Create http client option
     *
     * @throws \RuntimeException on file opening failure
     * @return array of http client options
     */
    protected function createHttpClientOption()
    {
        $options = [];
        if ($this->config->getDebug()) {
            $options[RequestOptions::DEBUG] = fopen($this->config->getDebugFile(), 'a');
            if (!$options[RequestOptions::DEBUG]) {
                throw new \RuntimeException('Failed to open the debug file: ' . $this->config->getDebugFile());
            }
        }

        return $options;
    }
}
