/**
* Returns the list of the virtual categories available under a category.
*
* @param CategoryInterface $category Category.
* @param array $excludedCategories Category already used into the building stack. Avoid short circuit.
*
* @return \Magento\Catalog\Model\ResourceModel\Category\Collection;
*/
private function getChildrenVirtualCategories(CategoryInterface $category, $excludedCategories = [])
{
$storeId = $category->getStoreId();
$categoryCollection = $this->categoryCollectionFactory->create()->setStoreId($storeId);
$categoryCollection->addAttributeToFilter('is_virtual_category', 1)->addAttributeToFilter('is_active', ['neq' => 0])->addPathFilter(sprintf('%s/.*', $category->getPath()));
if (!empty($excludedCategories)) {
$categoryCollection->addAttributeToFilter('entity_id', ['nin' => $excludedCategories]);
}
$categoryCollection->addAttributeToSelect(['is_active', 'virtual_category_root', 'is_virtual_category', 'virtual_rule']);
return $categoryCollection;
}