code: def test_basic_async_fun():
      with BatchPoolExecutor(
          project="hail-vdc", image=PYTHON_DILL_IMAGE
      ) as bpe:
          bpe.submit(asyncio.sleep, 1)
  
imports: import asyncio
  import time
  import pytest
  from hailtop.batch import BatchPoolExecutor, ServiceBackend
  from hailtop.config import get_user_config
  from hailtop.utils import sync_sleep_before_try
  from hailtop.batch_client.client import BatchClient
label_desc: Use image node_id 19 for calling a global function with example usage: test_basic_async_fun() without return types