code: def is_enabled(self):
      return False
  
imports: import os
  from typing import Any, Dict, Optional
  from enum import IntEnum
  import contextlib
  import random
  import numpy
  import inspect
  from fastNLP.envs.imports import _NEED_IMPORT_ONEFLOW
  from fastNLP.envs.utils import get_global_seed
  from fastNLP.envs import get_global_rank, FASTNLP_BACKEND_LAUNCH, FASTNLP_GLOBAL_SEED
  from fastNLP.core.samplers import ReproducibleBatchSampler
  from fastNLP.core.utils import auto_param_call
  from fastNLP.core.log import logger
label_desc: Use image node_id 3 for calling the DummyGradScaler obj's underlying member method code with example usage: obj.is_enabled() and returns: False