/**
* Sets sorting order by some column
*
* @param \Magento\Backend\Block\Widget\Grid\Column $column
* @return $this
*/
protected function _setCollectionOrder($column)
{
$collection = $this->getCollection();
if ($collection) {
$columnIndex = $column->getFilterIndex() ? $column->getFilterIndex() : $column->getIndex();
$collection->setOrder($columnIndex, strtoupper($column->getDir()));
}
return $this;
}