Add status code and response headers of the last request to java and csharp templates per #990

modules/swagger-codegen/src/main/resources/Java/ApiClient.mustache

@@ -49,6 +49,9 @@ public class ApiClient {
 
   private Map<String, Authentication> authentications;
 
+  private int statusCode;
+  private Map<String, List<String>> responseHeaders;
+
   private DateFormat dateFormat;
 
   public ApiClient() {
@@ -80,6 +83,20 @@ public class ApiClient {
     return this;
   }
 
+  /**
+   * Gets the status code of the previous request
+   */
+  public int getStatusCode() {
+    return statusCode;
+  }
+
+  /**
+   * Gets the response headers of the previous request
+   */
+  public Map<String, List<String>> getResponseHeaders() {
+    return responseHeaders;
+  }
+
   /**
    * Get authentications (key: authentication name, value: authentication).
    */
@@ -494,6 +511,9 @@ public class ApiClient {
 
     ClientResponse response = getAPIResponse(path, method, queryParams, body, binaryBody, headerParams, formParams, accept, contentType, authNames);
 
+    statusCode = response.getStatusInfo().getStatusCode();
+    responseHeaders = response.getHeaders();
+
     if(response.getStatusInfo() == ClientResponse.Status.NO_CONTENT) {
       return null;
     } else if (response.getStatusInfo().getFamily() == Family.SUCCESSFUL) {

modules/swagger-codegen/src/main/resources/csharp/ApiClient.mustache

@@ -50,6 +50,16 @@ namespace {{packageName}}.Client
             get { return _defaultHeaderMap; }
         }
 
+        /// <summary>
+        /// Gets the status code of the previous request
+        /// </summary>
+        public int StatusCode { get; private set; }
+
+        /// <summary>
+        /// Gets the response headers of the previous request
+        /// </summary>
+        public Dictionary<String, String> ResponseHeaders { get; private set; } 
+    
         // Creates and sets up a RestRequest prior to a call.
         private RestRequest PrepareRequest(
             String path, RestSharp.Method method, Dictionary<String, String> queryParams, String postBody,
@@ -110,7 +120,10 @@ namespace {{packageName}}.Client
         {
             var request = PrepareRequest(
                 path, method, queryParams, postBody, headerParams, formParams, fileParams, pathParams, authSettings);
-            return (Object)RestClient.Execute(request);
+            var response = RestClient.Execute(request);
+            StatusCode = (int) response.StatusCode;
+            ResponseHeaders = response.Headers.ToDictionary(x => x.Name, x => x.Value.ToString());
+            return (Object) response;
         }
 
         /// <summary>
@@ -133,7 +146,10 @@ namespace {{packageName}}.Client
         {
             var request = PrepareRequest(
                 path, method, queryParams, postBody, headerParams, formParams, fileParams, pathParams, authSettings);
-            return (Object) await RestClient.ExecuteTaskAsync(request);
+            var response = await RestClient.ExecuteTaskAsync(request);
+            StatusCode = (int)response.StatusCode;
+            ResponseHeaders = response.Headers.ToDictionary(x => x.Name, x => x.Value.ToString());
+            return (Object)response;
         }
     
         /// <summary>