code: def test_forward_image_scaler():
      verify_image_scaler((3, 224, 224), image_scale=0.17)
      verify_image_scaler(
          (3, 224, 224),
          blue_bias=-1.7669800519943237,
          green_bias=-1.985260009765625,
          red_bias=-2.102560043334961,
          image_scale=0.379,
      )
  
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 39 for calling a global function with example usage: test_forward_image_scaler() without return types