code: def smallest_machine_type():
      cloud = os.environ["HAIL_CLOUD"]
  
      if cloud == "gcp":
          return "n1-standard-1"
      assert cloud == "azure"
      return "Standard_D2ds_v4"
  
file_path: hail/batch/test/utils.py
imports: import inspect
  import os
  from typing import Union, overload
  import hailtop.batch_client.aioclient
  import hailtop.batch_client.client
  from hailtop import pip_version
label_desc: Use image node_id 6 for calling a global function with example usage: smallest_machine_type() and returns: str, str