code: def is_updated(self):
      return self.metric_dict is not None
  
file_path: DALI/docs/examples/use_cases/paddle/resnet50/train.py
imports: import logging
  import os
  from dali import build_dataloader
  from utils.affinity import set_cpu_affinity
  from utils.config import parse_args, print_args
  from utils.logger import setup_dllogger
  from utils.mode import Mode, RunScope
  from utils.save_load import init_program, save_model
  import paddle
  import program
  from paddle.distributed import fleet
  from paddle.static.amp.fp16_lists import AutoMixedPrecisionLists
  from paddle.static.amp.fp16_utils import cast_model_to_fp16
  from paddle.incubate import asp
label_desc: Use image node_id 3 for calling the MetricSummary obj's underlying member method code with example usage: obj.is_updated() and returns: unknown