public MenuLinkTree::getSubtreeHeight($id)
Finds the height of a subtree rooted by of the given ID.
string $id: The ID of an item in the storage.
int Returns the height of the subtree. This will be at least 1 if the ID exists, or 0 if the ID does not exist in the storage.
Overrides MenuLinkTreeInterface::getSubtreeHeight
public function getSubtreeHeight($id) { return $this->treeStorage->getSubtreeHeight($id); }
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