code: def get(self):
      average = self.sum / self.count
      return average.asscalar()
  
imports: import logging
  import os
  import sys
  import time
  import horovod.mxnet
  import mxnet
  from mxboard import SummaryWriter
  from mxnet import nd
  from default import config
  from evaluation import verification
label_desc: Use image node_id 4 for calling the MetricNdarray obj's underlying member method code with example usage: obj.get() and returns: average