public function CheckIfStub() { $dataset = $this->getDataset(); $id = $this->getId(); if ( is_null( $dataset ) ) throw new Exception ( "DefinedMeaningModel->isStub: Dataset is null." ); if ( is_null( $id ) ) throw new Exception ( "DefinedMeaningModel->isStub: Id is null." ); require_once( "Copy.php" ); return CopyTools::CheckIfStub( $dataset, $id ); }