/**
* Clear structure related internal caches like trail and level status.
*
* @internal
*/
public function invalidateTrailStatusCache($deep = true)
{
$this->cachedTrailStatus = null;
if ($deep && $this->children instanceof ItemCollection) {
$this->children->invalidateTrailStatusCache();
}
}
/**
* @return ItemInterface
*/
public function getParentItem()
{
return $this->collection->getParentItem();
}
