def METHOD_NAME(self):  # type: () -> None
    string_input = taint_pyobject(
        pyobject=b"foo", source_name="foo", source_value="foo", source_origin=OriginType.PARAMETER
    )
    assert get_tainted_ranges(string_input)
    bar = bytearray("bar", encoding="utf-8")
    result = mod.do_operator_add_params(string_input, bar)
    assert result == b"foobar"
    # TODO: error
    #     def add_aspect(op1, op2):
    #         if not isinstance(op1, TEXT_TYPES) or not isinstance(op2, TEXT_TYPES):
    #             return op1 + op2
    # >       return _add_aspect(op1, op2)
    # E       SystemError: <method 'join' of 'bytes' objects> returned a result with an exception set
    # assert len(get_tainted_ranges(result)) == 2