Fix for issue #58

Author: gnongsie

Client/ApiClient.cs

@@ -234,6 +234,8 @@ public Object CallApi(
             InterceptRequest(request);
             var response = RestClient.Execute(request);
             InterceptResponse(request, response);
+
+            Configuration.DefaultHeader.Clear();
 
             var httpResponseStatusCode = (int)response.StatusCode;
             var httpResponseHeaders = response.Headers;

generator/cybersource-csharp-template/ApiClient.mustache

@@ -281,6 +281,8 @@ namespace {{packageName}}.Client
             {{/supportsUWP}}
             {{/netStandard}}
             InterceptResponse(request, response);
+			
+			Configuration.DefaultHeader.Clear();
 
             var httpResponseStatusCode = (int)response.StatusCode;
             var httpResponseHeaders = response.Headers;