code: def explainer_hub_client(explainer_hub):
      explainer_hub.app.config["TESTING"] = True
      explainer_hub.app.config["WTF_CSRF_CHECK_DEFAULT"] = False
      client = explainer_hub.app.test_client()
      _ctx = explainer_hub.app.test_request_context()
      _ctx.push()
  
      yield client
  
      if _ctx is not None:
          _ctx.pop()
  
label_desc: Use image node_id 1 for calling a global function with example usage: explainer_hub_client(explainer_hub) without return types