code: private void addPostParams(final Request request) {
          if (to != null) {
              request.addPostParam("To", to.toString());
          }
  
          if (from != null) {
              request.addPostParam("From", from.toString());
          }
  
          if (parameters != null) {
              request.addPostParam("Parameters", Converter.mapToJson(parameters));
          }
      }
docs: Add the requested post parameters to the Request.
  
  @param request Request to add post params to