code: def available_models():
      return inspect.getmembers(models, inspect.isfunction)
  
imports: import inspect
  import pytest
  from os import path
  import numpy
  import torchvision.models
  from flashtorch.activmax import GradientAscent
  from flashtorch.utils import apply_transforms
label_desc: Use image node_id 3 for calling a global function with example usage: available_models() and returns: inspect