For example this asterisk resource name pattern:
https://github.com/googleapis/googleapis/blob/master/google/cloud/eventarc/v1/trigger.proto#L37

Causes the generated def test_parse_service_path() method fail with nothing to repeat at position 1 error due to a broken regexp (r"^*$") in the corresponding generated helper method:

    @staticmethod
    def parse_service_path(path: str) -> Dict[str,str]:
        """Parses a service path into its component segments."""
        m = re.match(r"^*$", path)
        return m.groupdict() if m else {}