Refactor: Reduced duplication

Author: dylan-asos

src/SendGrid/SendGridClient.cs

@@ -74,7 +74,7 @@ public SendGridClient(IWebProxy webProxy, string apiKey, string host = null, Dic
             }
             else
             {
-                client = new HttpClient(new RetryDelegatingHandler(options.ReliabilitySettings));
+                client = CreateHttpClientWithRetryHandler();
             }
 
             InitiateClient(apiKey, host, requestHeaders, version, urlPath);
@@ -104,7 +104,7 @@ public SendGridClient(HttpClient httpClient, SendGridClientOptions options)
             }
 
             this.options = options;
-            client = (httpClient == null) ? new HttpClient(new RetryDelegatingHandler(options.ReliabilitySettings)) : httpClient;
+            client = (httpClient == null) ? CreateHttpClientWithRetryHandler() : httpClient;
 
             InitiateClient(options.ApiKey, options.Host, options.RequestHeaders, options.Version, options.UrlPath);
         }
@@ -193,6 +193,11 @@ private void InitiateClient(string apiKey, string host, Dictionary<string, strin
             }
         }
 
+        private HttpClient CreateHttpClientWithRetryHandler()
+        {
+            return new HttpClient(new RetryDelegatingHandler(options.ReliabilitySettings));
+        }
+
         /// <summary>
         /// The supported API methods.
         /// </summary>