code: def save_model(model, model_dir):
      logger.info("Saving the model.")
      path = os.path.join(model_dir, "model.pth")
      # recommended way from http://pytorch.org/docs/master/notes/serialization.html
      torch.save(model.state_dict(), path)
  
imports: import argparse
  import json
  import logging
  import os
  import sys
  import torch
  import torch.distributed
  import torch.nn
  import torch.nn.functional
  import torch.optim
  import torch.utils.data
  import torch.utils.data.distributed
  from torchvision import datasets, transforms
label_desc: Use image node_id 7 for calling a global function with example usage: save_model(model, model_dir) without return types