/**
  * @copydoc CategoryGridDataProvider::setDataProvider()
  */
 function setDataProvider($gridDataProvider)
 {
     if (is_a($gridDataProvider, 'SubmissionFilesGridDataProvider')) {
         parent::setDataProvider($gridDataProvider);
     } else {
         assert(false);
     }
 }
 /**
  * @copydoc CategoryGridDataProvider::setDataProvider()
  */
 function setDataProvider($gridDataProvider)
 {
     assert(is_a($gridDataProvider, 'SubmissionFilesGridDataProvider'));
     parent::setDataProvider($gridDataProvider);
 }