code: private void handleBody(RequestBuilder builder) {
  		if (!hasBody()) {
  			return;
  		}
  
  		if (body != null) {
  			handleRequestBody(builder);
  		}
  		else {
  			handleFormParameters(builder);
  		}
  	}
docs: Add body entity to the final HTTP request.
  
  @param builder The pending HTTP request.
  @see RequestBuilder#addFormParam(String, String)
  @see RequestBuilder#setBody(String)