def METHOD_NAME(self):
    object_group = self.bucket.objects(obj_names=self.obj_names[1:])
    job_id = object_group.delete()
    self.client.job(job_id).wait(timeout=TEST_TIMEOUT)
    existing_objects = self.bucket.list_objects(prefix=self.obj_prefix).entries
    self.assertEqual(1, len(existing_objects))
    self.assertEqual(self.obj_names[0], existing_objects[0].name)