code: def validate_input():
      pass
  
imports: import os
  import pickle
  from typing import Any, Dict, Optional
  import uuid
  from ..None import machine_config
  from ..None import run
  import tensorflow
  import tensorflow_datasets
  from official.legacy.image_classification.efficientnet import efficientnet_model
  from official.legacy.image_classification.resnet import resnet_model
label_desc: Use image node_id 3 for calling a global function with example usage: validate_input() without return types