code: def model_name():
      return "image_classifier"
  
file_path: serve/ts/torch_handler/unit_tests/test_image_classifier.py
imports: import sys
  from pathlib import Path
  import pytest
  from torchvision.models.resnet import ResNet18_Weights
  from ts.torch_handler.image_classifier import ImageClassifier
  from .test_utils.mock_context import MockContext
  from .test_utils.model_dir import copy_files, download_model
label_desc: Use image node_id 2 for calling a global function with example usage: model_name() and returns: str