/**
* Get category tree
*
* @param int|null $rootNode
* @param bool $reload
* @return \Magento\Framework\Data\Tree\Node
*/
protected function getTree($rootNode = null, $reload = false)
{
if (!$this->categoryTree || $reload) {
if ($rootNode === null) {
$rootNode = $this->storeManager->getStore()->getRootCategoryId();
}
$tree = $this->resourceCategoryTreeFactory->create();
$node = $tree->loadNode($rootNode)->loadChildren();
$tree->addCollectionData(null, false, $rootNode);
$this->categoryTree = $node;
}
return $this->categoryTree;
}
