def METHOD_NAME(self) -> None:
    actual = self.dashboard_last_modified.create_next_node()
    actual_serialized = neo4_serializer.serialize_node(actual)
    expected: Dict[str, Any] = {
        'timestamp:UNQUOTED': 123456789,
        'name': 'last_updated_timestamp',
        'KEY': self.expected_ts_key,
        'LABEL': 'Timestamp'
    }
    assert actual is not None
    self.assertDictEqual(actual_serialized, expected)
    self.assertIsNone(self.dashboard_last_modified.create_next_node())