public function addCreatorID($tableName, $columnName = 'creator_id')
    {
        $this->addColumn('{{%' . $tableName . '}}', $columnName,
            $this->bigInteger()->comment('ID of user who created this item'));
        $this->createIndex($tableName . '_' . $columnName . '_idx', '{{%' . $tableName . '}}', $columnName);
    }