/**
* @return array
*/
public function getSubTotals()
{
$filterData = $this->getFilterData();
$subTotalsCollection = $this->_resourceFactory->create($this->getResourceCollectionName())->setPeriod($filterData->getData('period_type'))->setDateRange($filterData->getData('from', null), $filterData->getData('to', null))->addStoreFilter($this->_getStoreIds())->setAggregatedColumns($this->_getAggregatedColumns())->isSubTotals(true);
$this->_addOrderStatusFilter($subTotalsCollection, $filterData);
$this->_addCustomFilter($subTotalsCollection, $filterData);
$this->setSubTotals($subTotalsCollection->getItems());
return parent::getSubTotals();
}