private RESTCommand<ServiceStats> GetServiceStatsImpl(QueueRequestOptions requestOptions)
        {
            if (RetryPolicies.LocationMode.PrimaryOnly == requestOptions.LocationMode)
            {
                throw new InvalidOperationException(SR.GetServiceStatsInvalidOperation);
            }  

            RESTCommand<ServiceStats> retCmd = new RESTCommand<ServiceStats>(this.Credentials, this.StorageUri, this.HttpClient);
            requestOptions.ApplyToStorageCommand(retCmd);
            retCmd.CommandLocationMode = CommandLocationMode.PrimaryOrSecondary;
            retCmd.BuildRequest = (cmd, uri, builder, cnt, serverTimeout, ctx) => QueueHttpRequestMessageFactory.GetServiceStats(uri, serverTimeout, ctx, this.GetCanonicalizer(), this.Credentials);
            retCmd.RetrieveResponseStream = true;
            retCmd.PreProcessResponse = (cmd, resp, ex, ctx) => HttpResponseParsers.ProcessExpectedStatusCodeNoException(HttpStatusCode.OK, resp, null /* retVal */, cmd, ex);
            retCmd.PostProcessResponseAsync = (cmd, resp, ctx, ct) => QueueHttpResponseParsers.ReadServiceStatsAsync(cmd.ResponseStream, ct);
            return retCmd;
        }
        private RESTCommand <ServiceStats> GetServiceStatsImpl(QueueRequestOptions requestOptions)
        {
            RESTCommand <ServiceStats> retCmd = new RESTCommand <ServiceStats>(this.Credentials, this.StorageUri);

            requestOptions.ApplyToStorageCommand(retCmd);
            retCmd.CommandLocationMode    = CommandLocationMode.PrimaryOrSecondary;
            retCmd.BuildRequest           = (cmd, uri, builder, cnt, serverTimeout, ctx) => QueueHttpRequestMessageFactory.GetServiceStats(uri, serverTimeout, ctx);
            retCmd.RetrieveResponseStream = true;
            retCmd.Handler             = this.AuthenticationHandler;
            retCmd.BuildClient         = HttpClientFactory.BuildHttpClient;
            retCmd.PreProcessResponse  = (cmd, resp, ex, ctx) => HttpResponseParsers.ProcessExpectedStatusCodeNoException(HttpStatusCode.OK, resp, null /* retVal */, cmd, ex);
            retCmd.PostProcessResponse = (cmd, resp, ctx) => Task.Factory.StartNew(() => QueueHttpResponseParsers.ReadServiceStats(cmd.ResponseStream));
            return(retCmd);
        }