code: def __init__(self, data, delay=0.1):
      self.delay = delay
      self.data = data
  
imports: from __future__ import annotations
  import asyncio
  import os
  import random
  from contextlib import suppress
  from time import sleep
  from unittest import mock
  import pytest
  from tlz import first, merge, partition_all
  import dask.config
  from dask import delayed
  from dask.utils import parse_bytes
  from distributed import Client, Nanny, profile, wait
  from distributed.comm import CommClosedError
  from distributed.compatibility import MACOS
  from distributed.metrics import time
  from distributed.utils import CancelledError, sync
  from distributed.utils_test import NO_AMM, BlockedGatherDep, BlockedGetData, async_poll_for, captured_logger, cluster, div, gen_cluster, inc, slowadd, slowinc
  from distributed.worker_state_machine import FreeKeysEvent
label_desc: Use image node_id 1 to create a new SlowTransmitData object  with example: obj = SlowTransmitData(data, delay)