/**
  * Fetch OverlegFilesRechten's which this OverlegFiles references.
  * `overleg_files`.`filename` -> `overleg_files_rechten`.`filename`
  *
  * @param PDO $db a PDO Database instance
  * @param array $sort array of DSC instances
  * @return OverlegFilesRechten[]
  */
 public function fetchOverlegFilesRechtenCollection(PDO $db, $sort = null)
 {
     $filter = array(OverlegFilesRechten::FIELD_FILENAME => $this->getFilename());
     return OverlegFilesRechten::findByFilter($db, $filter, true, $sort);
 }