/// <summary>
        /// fetch
        /// </summary>
        /// <param name="pathCallSid"> The call_sid </param>
        /// <param name="processingState"> The processing_state </param>
        /// <param name="client"> Client to make requests to Twilio </param>
        /// <returns> A single instance of CallSummary </returns>
        public static CallSummaryResource Fetch(string pathCallSid,
                                                CallSummaryResource.ProcessingStateEnum processingState = null,
                                                ITwilioRestClient client = null)
        {
            var options = new FetchCallSummaryOptions(pathCallSid)
            {
                ProcessingState = processingState
            };

            return(Fetch(options, client));
        }
        /// <summary>
        /// fetch
        /// </summary>
        /// <param name="pathCallSid"> The call_sid </param>
        /// <param name="processingState"> The processing_state </param>
        /// <param name="client"> Client to make requests to Twilio </param>
        /// <returns> Task that resolves to A single instance of CallSummary </returns>
        public static async System.Threading.Tasks.Task <CallSummaryResource> FetchAsync(string pathCallSid,
                                                                                         CallSummaryResource.ProcessingStateEnum processingState = null,
                                                                                         ITwilioRestClient client = null)
        {
            var options = new FetchCallSummaryOptions(pathCallSid)
            {
                ProcessingState = processingState
            };

            return(await FetchAsync(options, client));
        }