code: public function save($data, $form)
      {
          $origStage = Versioned::get_stage();
          Versioned::set_stage('Stage');
          $action = $this->owner->doSave($data, $form);
          Versioned::set_stage($origStage);
  
          return $action;
      }
docs: Allows us to have our own configurable save button
  @param  arary $data The form data
  @param  Form $form The Form object
  @return HTTPResponse