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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def iter_object_acl(root):
 """Child-first discovery of ACEs for an object. Walks the ACL graph via ``__acl_bases__`` and yields the ACEs parsed from ``__acl__`` on each object. """


    for obj in iter_object_graph(root):
        for ace in parse_acl(getattr(obj, '__acl__', ())):
            yield ace