def METHOD_NAME(self):
    data = {
        'a': 1,
        'b': [2, {'bb': 3}, [4, {'bbb': 5}]],
        'c': {'cc': 6, 'ccc': {'e': 7}},
        'd': [],
    }
    b = Bunch()
    b.update(data)
    self.assertEqual(
        str(b),
        '''