code: def test_forward_max():
      _verify_max((1, 3, 20, 20))
      _verify_max((20, 20))
  
imports: from os import path
  from enum import Enum
  import tempfile
  import numpy
  import model_zoo
  import coremltools
  from coremltools.models.neural_network import NeuralNetworkBuilder
  from coremltools.models import datatypes
  from tensorflow import keras
  import tvm
  import tvm.topi.testing
  import tvm.testing
  from tvm.contrib import graph_executor
  from tvm.topi.testing import conv2d_nchw_python
  from tvm import relay
label_desc: Use image node_id 21 for calling a global function with example usage: test_forward_max() without return types