def METHOD_NAME(self):
    bookmark1 = models.Channel.bookmarked_by.through.objects.create(
        **self.bookmark_db_metadata
    )
    data2 = self.bookmark_db_metadata
    data2["channel_id"] = self.channel2.id
    bookmark2 = models.Channel.bookmarked_by.through.objects.create(
        **data2
    )
    self.client.force_authenticate(user=self.user)
    response = self.sync_changes(
        [
            generate_delete_event(
                bookmark1.channel_id,
                BOOKMARK,
                user_id=self.user.id,
            ),
            generate_delete_event(
                bookmark2.channel_id,
                BOOKMARK,
                user_id=self.user.id,
            ),
        ],
    )
    self.assertEqual(response.status_code, 200, response.content)
    try:
        models.Channel.bookmarked_by.through.objects.get(id=bookmark1.id)
        self.fail("Bookmark 1 was not deleted")
    except models.Channel.bookmarked_by.through.DoesNotExist:
        pass
    try:
        models.Channel.bookmarked_by.through.objects.get(id=bookmark2.id)
        self.fail("Bookmark 2 was not deleted")
    except models.Channel.bookmarked_by.through.DoesNotExist:
        pass