/// <summary>
        /// Extract text using OCR Extract text from a file using OCR.
        /// </summary>
        /// <exception cref="Muhimbi.PDF.Online.Client.Client.ApiException">Thrown when fails to make API call</exception>
        /// <param name="inputData"></param>
        /// <returns>Task of ApiResponse (OcrOperationResponse)</returns>
        public async System.Threading.Tasks.Task <ApiResponse <OcrOperationResponse> > OcrTextAsyncWithHttpInfo(OcrTextData inputData)
        {
            // verify the required parameter 'inputData' is set
            if (inputData == null)
            {
                throw new ApiException(400, "Missing required parameter 'inputData' when calling OCRApi->OcrText");
            }

            var    localVarPath         = "/v1/operations/ocr_text";
            var    localVarPathParams   = new Dictionary <String, String>();
            var    localVarQueryParams  = new Dictionary <String, String>();
            var    localVarHeaderParams = new Dictionary <String, String>(Configuration.DefaultHeader);
            var    localVarFormParams   = new Dictionary <String, String>();
            var    localVarFileParams   = new Dictionary <String, FileParameter>();
            Object localVarPostBody     = null;

            // to determine the Content-Type header
            String[] localVarHttpContentTypes = new String[] {
                "application/json"
            };
            String localVarHttpContentType = Configuration.ApiClient.SelectHeaderContentType(localVarHttpContentTypes);

            // to determine the Accept header
            String[] localVarHttpHeaderAccepts = new String[] {
                "application/json"
            };
            String localVarHttpHeaderAccept = Configuration.ApiClient.SelectHeaderAccept(localVarHttpHeaderAccepts);

            if (localVarHttpHeaderAccept != null)
            {
                localVarHeaderParams.Add("Accept", localVarHttpHeaderAccept);
            }

            // set "format" to json by default
            // e.g. /pet/{petId}.{format} becomes /pet/{petId}.json
            localVarPathParams.Add("format", "json");
            if (inputData != null && inputData.GetType() != typeof(byte[]))
            {
                localVarPostBody = Configuration.ApiClient.Serialize(inputData); // http body (model) parameter
            }
            else
            {
                localVarPostBody = inputData; // byte array
            }

            // authentication (oauth2_auth) required
            // oauth required
            if (!String.IsNullOrEmpty(Configuration.AccessToken))
            {
                localVarHeaderParams["Authorization"] = "Bearer " + Configuration.AccessToken;
            }
            // authentication (api_key) required
            if (!String.IsNullOrEmpty(Configuration.GetApiKeyWithPrefix("api_key")))
            {
                localVarHeaderParams["api_key"] = Configuration.GetApiKeyWithPrefix("api_key");
            }

            // make the HTTP request
            IRestResponse localVarResponse = (IRestResponse)await Configuration.ApiClient.CallApiAsync(localVarPath,
                                                                                                       Method.POST, localVarQueryParams, localVarPostBody, localVarHeaderParams, localVarFormParams, localVarFileParams,
                                                                                                       localVarPathParams, localVarHttpContentType);

            int localVarStatusCode = (int)localVarResponse.StatusCode;

            if (ExceptionFactory != null)
            {
                Exception exception = ExceptionFactory("OcrText", localVarResponse);
                if (exception != null)
                {
                    throw exception;
                }
            }

            return(new ApiResponse <OcrOperationResponse>(localVarStatusCode,
                                                          localVarResponse.Headers.ToDictionary(x => x.Name, x => x.Value.ToString()),
                                                          (OcrOperationResponse)Configuration.ApiClient.Deserialize(localVarResponse, typeof(OcrOperationResponse))));
        }