def METHOD_NAME(self):
    """Verify that more than one prefix can be registered"""
    register_locators("test1", {"foo": "//div/foo"})
    register_locators("test2", {"bar": "//div/bar"})
    expected = {"test1": {"foo": "//div/foo"}, "test2": {"bar": "//div/bar"}}
    assert LOCATORS == expected