def METHOD_NAME():
    original = TaggedList([0, 1, 2, ["foo"]], "tag:nowhere.org:custom/foo-1.0.0")
    result = copy(original)
    assert result == original
    assert result.data == original.data
    assert result._tag == original._tag
    original.append(4)
    assert len(result) == 4
    original[3].append("bar")
    assert len(result[3]) == 2