code: def roles_not_implemented() -> bool:
      return (
          "Unimplemented"
          in det_cmd(["rbac", "my-permissions"]).stderr.decode()
      )
  
imports: import contextlib
  from typing import Any, Callable, Dict, Generator, List, NamedTuple, Optional, Tuple
  import pytest
  from determined.common import api
  from determined.common.api import authentication, bindings, errors
  from tests import api_utils
  from tests import config
  from tests.cluster.test_workspace_org import setup_workspaces
  from .test_groups import det_cmd, det_cmd_expect_error, det_cmd_json
  from .test_users import logged_in_user
label_desc: Use image node_id 1 for calling a global function with example usage: roles_not_implemented() and returns: unknown