def get_device_name(self, device):
        return None if device == 'DEV1' else device.lower()
when the macro tag doesn't have an end tag,
dataset/ETHPy150Open home-assistant/home-assistant/tests/config/custom_components/device_tracker/test.py/MockScanner.get_device_name--crossover with--dataset/ETHPy150Open nalourie/django-macros/build/lib/macros/tests.py/MacrosTests.test_macro_with_no_end_tag