When generating API stubs with the scaffold utility using, e.g., `python -m localstack.aws.scaffold sns`,
the scaffold creates method names from operation names, which are ugly when acronyms (subsequent uppercase characters that belong together).

Example:
`CreateSMSSandboxPhoneNumber` -> `create_s_m_s_sandbox_phone_number`

it would be nicer to have `create_sms_sandbox_phone_number`

This is a limitation of this method: https://github.com/localstack/localstack/blob/1888e66b85d7e6a8ee457bc7a732984fcf7aa830/localstack/utils/common.py#L978-L979
now = common.mktime(datetime.now(), millis=True)
        self.assertEqual(int(now / 1000), int(time.time()))
    def test_timestamp_millis(self):
        result = common.timestamp_millis(datetime.now())
        self.assertIn("T", result)
        result = common.timestamp_millis(date.today())
        self.assertIn("00:00:00", result)
        self.assertIn("T", result)
    def test_extract_jsonpath(self):
        obj = {"a": {"b": [{"c": 123}, "foo"]}, "e": 234}
        result = common.extract_jsonpath(obj, "$.a.b")
        self.assertEqual([{"c": 123}, "foo"], result)
        result = common.extract_jsonpath(obj, "$.a.b.c")
        self.assertFalse(result)
        result = common.extract_jsonpath(obj, "$.foobar")
        self.assertFalse(result)
        result = common.extract_jsonpath(obj, "$.e")
        self.assertEqual(234, result)
        result = common.extract_jsonpath(obj, "$.a.b[0]")
        self.assertEqual({"c": 123}, result)
        result = common.extract_jsonpath(obj, "$.a.b[0].c")
        self.assertEqual(123, result)
        result = common.extract_jsonpath(obj, "$.a.b[1]")
        self.assertEqual("foo", result)
    def test_str_to_bool(self):