code: def __getattribute__(self, item):
      return_dict = object.__getattribute__(self, "return_dict")
      if item in return_dict:
          mocked = return_dict[item]
          if isinstance(mocked, Callable):
              return mocked()
          else:
              return lambda *a, **kw: mocked
      return object.__getattribute__(self, item)
  
imports: import os
  import sys
  import tempfile
  import unittest
  from typing import Dict, Callable
  from unittest.mock import patch
  import yaml
  from github import Repository
  from ray_release.buildkite.concurrency import get_test_resources_from_cluster_compute, get_concurrency_group
  from ray_release.buildkite.filter import filter_tests, group_tests
  from ray_release.buildkite.settings import split_ray_repo_str, get_default_settings, update_settings_from_environment, Frequency, update_settings_from_buildkite, Priority, get_test_attr_regex_filters
  from ray_release.buildkite.step import get_step, RELEASE_QUEUE_DEFAULT, RELEASE_QUEUE_CLIENT, DOCKER_PLUGIN_KEY
  from ray_release.test import Test
  from ray_release.exception import ReleaseTestConfigError
  from ray_release.wheels import DEFAULT_BRANCH
label_desc: Use image node_id 1 for calling the MockReturn obj's underlying member method code with example usage: obj.__getattribute__(item) and returns: object, mocked, function