code: def loss(self, *args, **kwargs):
      return
  
imports: import warnings
  import psutil
  import torch
  import torch.nn
  from tqdm import tqdm
  from tez import enums
  from tez.callbacks import CallbackRunner
  from tez.utils import AverageMeter
label_desc: Use image node_id 9 for calling the Model obj's underlying member method code with example usage: obj.loss() without return types