def METHOD_NAME():
    red = MarkingDefinition(
        id='marking-definition--5e57c739-391a-4eb3-b6be-7d15ca92d5ed',
        created='2017-01-20T00:00:00.000Z',
        definition_type='tlp',
        name='TLP:RED',
        definition=TLPMarking(tlp='red'),
    )
    assert red.serialize(sort_keys=True) == TLP_RED.serialize(sort_keys=True)