src/View/Cell/ResultCell.php
private function getGroupByField(): string
    {
        if ('' === $this->groupByField) {
            $this->groupByField = ! empty($this->searchData['group_by']) ? $this->searchData['group_by'] : '';
        }

        return $this->groupByField;
    }
private function getGroupByField(): string
    {
        if ('' === $this->groupByField) {
            $this->groupByField = ! empty($this->searchData['group_by']) ? $this->searchData['group_by'] : '';
        }

        return $this->groupByField;
    }
private function getGroupByField ( ) : string { if ( '' === $ this -> groupByField ) { $ this -> groupByField = ! empty ( $ this -> searchData [ 'group_by' ] ) ? $ this -> searchData [ 'group_by' ] : '' ; } return $ this -> groupByField ; }
Group field getter.

@return string
Group field getter .