def METHOD_NAME():
    print("trivial test 2")
    edges_1 = [("a", "b"), ("a", "c")]
    edges_2 = [("v", "y")]
    t1 = nx.Graph()
    t1.add_edges_from(edges_1)
    t2 = nx.Graph()
    t2.add_edges_from(edges_2)
    isomorphism = tree_isomorphism(t1, t2)
    # they cannot be isomorphic,
    # since they have different numbers of nodes
    assert isomorphism == []