Ublaboo\DataGrid\DataGrid::getSortNext PHP Method

    public function getSortNext(\Ublaboo\DataGrid\Column\Column $column)
    {
        $sort = $column->getSortNext();
        if ($this->isMultiSortEnabled()) {
            $sort = array_merge($this->sort, $sort);
        }
        return array_filter($sort);
    }