def METHOD_NAME(self):
    spend_bundle = BLANK_SPEND_BUNDLE
    round_trip(spend_bundle, include_legacy_keys=True, exclude_modern_keys=True)
    round_trip(spend_bundle, include_legacy_keys=True, exclude_modern_keys=False)
    round_trip(spend_bundle, include_legacy_keys=False, exclude_modern_keys=False)