code: def test_model_with_preprocessing(self) -> None:
      model = hub.load_composite_model(
          "ResNet50-fp32", preprocessing_model="ResNet-preproc"
      )
      self.assertIsInstance(model, ModelProto)
  
file_path: onnx/onnx/test/hub_test.py
imports: import glob
  import os
  import unittest
  from os.path import join
  import pytest
  from onnx import ModelProto, hub
label_desc: Use image node_id 12 for calling the TestModelHub obj's underlying member method code with example usage: obj.test_model_with_preprocessing() without return types