code: def get_metrics(config):
      import mxnet as mx
  
      return mx.metric.Accuracy()
  
file_path: analytics-zoo/pyzoo/zoo/examples/orca/learn/mxnet/lenet_mnist.py
imports: import argparse
  from zoo.orca import init_orca_context, stop_orca_context
  from zoo.orca.learn.mxnet import Estimator, create_config
label_desc: Use image node_id 5 for calling a global function with example usage: get_metrics(config) and returns: mx