improving your package

[hossein-holy]

hi, your package is very useful and very thank you for this package.
I'm have some Ideas for improving your package. you can add checking functions like isChildren($id, $depth = null) or isDescendants($id, $depth = null) check if given id is in children of object. also can define default parameter $depth if need to search in specific Depth. in the same way isSiblings($id), isParent($id), isAncestors($id) and more.

[lrljoe]

I know from experience he'll always welcome a PR if you want to code that out!