code: def __init__(self, *args, **kwargs):
      super().__init__(*args, **kwargs)
      self.in_instantiate = asyncio.Event()
      self.wait_instantiate = asyncio.Event()
  
imports: from __future__ import annotations
  import asyncio
  import gc
  import logging
  import multiprocessing
  import os
  import random
  import sys
  import warnings
  import weakref
  from contextlib import suppress
  from unittest import mock
  import psutil
  import pytest
  from tlz import first
  from tornado.ioloop import IOLoop
  import dask
  from dask.utils import tmpfile
  from distributed import Nanny, Scheduler, Worker, profile, rpc, wait, worker
  from distributed.compatibility import LINUX, WINDOWS
  from distributed.core import CommClosedError, Status, error_message
  from distributed.diagnostics import SchedulerPlugin
  from distributed.diagnostics.plugin import NannyPlugin, WorkerPlugin
  from distributed.metrics import time
  from distributed.protocol.pickle import dumps
  from distributed.utils import TimeoutError, get_mp_context, parse_ports
  from distributed.utils_test import async_poll_for, captured_logger, gen_cluster, gen_test, raises_with_cause
label_desc: Use image node_id 1 to create a new SlowBrokenNanny object from inherited base classes: Nanny with example: obj = SlowBrokenNanny()