Braintree.TestUtil.BraintreeTestHttpService.GetJsonResponse C# (CSharp) Method

        private HttpResponseMessage GetJsonResponse(string MerchantId, string Path, string method, string requestBody)
        {

            try
            {
                var request = new HttpRequestMessage(new HttpMethod(method), Environment.DEVELOPMENT.GatewayURL + "/merchants/" + MerchantId + "/client_api/" + Path);
                request.Headers.Add("X-ApiVersion", ApiVersion);
                request.Headers.Add("Accept", "application/xml");
                request.Headers.Add("UserAgent", "Braintree .NET " + typeof(TestHelper).GetTypeInfo().Assembly.GetName().Version.ToString());
                request.Headers.Add("KeepAlive", "false");
                request.Headers.Add("Timeout", "60000");
                request.Headers.Add("ReadWriteTimeout", "60000");

                if (requestBody != null)
                {
                    var content = requestBody;
                    var utf8_string = Encoding.UTF8.GetString(Encoding.UTF8.GetBytes(requestBody));
                    request.Content = new StringContent(utf8_string, Encoding.UTF8,"application/x-www-form-urlencoded");
                    request.Content.Headers.ContentLength = UTF8Encoding.UTF8.GetByteCount(utf8_string);
                }
                    
                var httpClientHandler = new HttpClientHandler
                {
                    AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate,
                };

                HttpResponseMessage response;

                using (var client = new HttpClient(httpClientHandler))
                {
                    response = client.SendAsync(request).GetAwaiter().GetResult();
                }
                    
                return response;
            }
            catch (WebException e)
            {
                var errorWebResponse = e.Response as HttpWebResponse;
                var errorResponseMessage = new HttpResponseMessage(errorWebResponse.StatusCode);
                errorResponseMessage.Content = new StringContent(e.Response.ToString(), Encoding.UTF8, "application/json");
                if (errorWebResponse == null) throw e;
                return errorResponseMessage;
            }
        }
#else