original_string: protected function delete_response_files($contextid, $itemidstest, $params) {
          $fs = get_file_storage();
          foreach (question_engine::get_all_response_file_areas() as $filearea) {
              $fs->delete_area_files_select($contextid, 'question', $filearea,
                      $itemidstest, $params);
          }
      }
code: protected function delete_response_files($contextid, $itemidstest, $params) {
          $fs = get_file_storage();
          foreach (question_engine::get_all_response_file_areas() as $filearea) {
              $fs->delete_area_files_select($contextid, 'question', $filearea,
                      $itemidstest, $params);
          }
      }
code_tokens: protected function delete_response_files ( $ contextid , $ itemidstest , $ params ) { $ fs = get_file_storage ( ) ; foreach ( question_engine :: get_all_response_file_areas ( ) as $ filearea ) { $ fs -> delete_area_files_select ( $ contextid , 'question' , $ filearea , $ itemidstest , $ params ) ; } }
docstring: Delete all the files belonging to the response variables in the gives
  question attempt steps.
  @param int $contextid the context these attempts belong to.
  @param string $itemidstest a bit of SQL that can be used in a
  WHERE itemid $itemidstest clause. Must use named params.
  @param array $params any query parameters used in $itemidstest.
docstring_tokens: Delete all the files belonging to the response variables in the gives question attempt steps .