code: def run(self, *args, **kwargs):
      for metric in self.metrics:
          metric.run(*args, **kwargs)
  
imports: import os
  import time
  import hashlib
  import numpy
  import tensorflow
  import dnnlib
  import dnnlib.tflib
  from training import misc
  from training import dataset
label_desc: Use image node_id 2 for calling the MetricGroup obj's underlying member method code with example usage: obj.run() without return types