def METHOD_NAME(self, **kw):
    if not self.uuid:
        self.uuid = uuid.uuid4()
    if not self.slug:
        # Work with both, strings (if passed manually on .create()
        # and UUID instances)
        self.slug = str(self.uuid).replace('-', '')[:30]
    self.clean_slug()
    super().METHOD_NAME(**kw)