code: private void addPostParams(final Request request) {
          if (phoneNumber != null) {
              request.addPostParam("PhoneNumber", phoneNumber.toString());
          }
  
          if (friendlyName != null) {
              request.addPostParam("FriendlyName", friendlyName);
          }
  
          if (callDelay != null) {
              request.addPostParam("CallDelay", callDelay.toString());
          }
  
          if (extension != null) {
              request.addPostParam("Extension", extension);
          }
  
          if (statusCallback != null) {
              request.addPostParam("StatusCallback", statusCallback.toString());
          }
  
          if (statusCallbackMethod != null) {
              request.addPostParam("StatusCallbackMethod", statusCallbackMethod.toString());
          }
      }
docs: Add the requested post parameters to the Request.
  
  @param request Request to add post params to