code: def __call__(self, x):
      h1 = F.relu(self.l1(x))
      h2 = F.relu(self.l2(h1))
      return self.l3(h2)
  
file_path: sagemaker-python-sdk/tests/data/chainer_mnist/mnist.py
imports: from __future__ import print_function
  import argparse
  import os
  import chainer
  from chainer import serializers, training
  from chainer.datasets import tuple_dataset
  import chainer.functions
  import chainer.links
  from chainer.training import extensions
  import numpy
  import sagemaker_containers
label_desc: Use image node_id 2 for calling the MLP obj's underlying member method code with example usage: obj.__call__(x) and returns: self