code: def get_config_default(config, field_name):
      assert (
          field_name in config.__fields__
      ), f"'{field_name}' is not a field in {config}"
      assert not config.__fields__.get(
          field_name
      ).required, f"'{field_name}' is a required field and does not have a default value"
      return config.__fields__.get(field_name).default
  
imports: import json
  import collections
  import collections.abc
  from functools import reduce
  from deepspeed.pydantic_v1 import BaseModel
  from deepspeed.utils import logger
label_desc: Use image node_id 1 for calling a global function with example usage: get_config_default(config, field_name) and returns: config