/// <summary>
        /// Gets the sentiment for a collection asynchronously.
        /// </summary>
        /// <param name="request">The request.</param>
        /// <see cref="Microsoft.ProjectOxford.Text.Sentiment.SentimentResponse"/>
        /// <returns>Returns a SentimentResponse object from the Sentiment Analysis API.</returns>
        public async Task <SentimentResponse> GetSentimentAsync(SentimentRequest request)
        {
            request.Validate();

            var url = this.Url;

            var json         = JsonConvert.SerializeObject(request);
            var responseJson = await this.SendPostAsync(url, json);

            var response = JsonConvert.DeserializeObject <SentimentResponse>(responseJson);

            return(response);
        }
 /// <summary>
 /// Gets the sentiment for a collection of documents.
 /// </summary>
 /// <param name="request">The request.</param>
 /// <see cref="Microsoft.ProjectOxford.Text.Sentiment.SentimentResponse"/>
 /// <returns>Returns a SentimentResponse object from the Sentiment Analysis API.</returns>
 public SentimentResponse GetSentiment(SentimentRequest request)
 {
     return(GetSentimentAsync(request).Result);
 }