code: def test_close_loop_sync_start_new_loop(cleanup):
      with _check_loop_runner():
          _check_cluster_and_client_loop(loop=None)
  
file_path: distributed/distributed/tests/test_client_loop.py
imports: from __future__ import annotations
  import contextlib
  from distributed import Client, LocalCluster
  from distributed.utils import LoopRunner
label_desc: Use image node_id 3 for calling a global function with example usage: test_close_loop_sync_start_new_loop(cleanup) without return types