$tables = $fields = $conds = $query_options = $join_conds = [];
$group = new ChangesListStringOptionsFilterGroup( $groupDefinition );
$specialPage = $this->getSpecialPage();
$tables = $fields = $conds = $query_options = $join_conds = [];
$group = new ChangesListStringOptionsFilterGroup( $groupDefinition );
$specialPage = $this->getSpecialPage();