public function getColumnChildren($column)
    {
        $children = $this->get('children');
        if (isset($children[$column])) {
            return $children[$column];
        }

        return [];
    }
public function getColumnChildren($column)
    {
        $children = $this->get('children');
        if (isset($children[$column])) {
            return $children[$column];
        }

        return [];
    }
public function getColumnChildren ( $ column ) { $ children = $ this -> get ( 'children' ) ; if ( isset ( $ children [ $ column ] ) ) { return $ children [ $ column ] ; } return [ ] ; }
Returns the children from a given column

@param int $column a column number
@return array
Returns the children from a given column