def find_backref_chain(obj, predicate, max_depth=20, extra_ignore=()):
    return _find_chain(obj, predicate, gc.get_referrers,
                       max_depth=max_depth, extra_ignore=extra_ignore)
Find a shortest chain of references leading to obj.
dataset/ETHPy150Open Exa-Networks/exabgp/lib/exabgp/dep/objgraph.py/find_backref_chain