public function deleteGroupAssignmentsForType($typeId, $status)
    {
        $q = $this->dbHandler->createDeleteQuery();
        $q->deleteFrom(
            $this->dbHandler->quoteTable('ezcontentclass_classgroup')
        )->where(
            $q->expr->lAnd(
                $q->expr->eq(
                    $this->dbHandler->quoteColumn('contentclass_id'),
                    $q->bindValue($typeId, null, \PDO::PARAM_INT)
                ),
                $q->expr->eq(
                    $this->dbHandler->quoteColumn('contentclass_version'),
                    $q->bindValue($status, null, \PDO::PARAM_INT)
                )
            )
        );
        $q->prepare()->execute();
    }