code: def training_step(self, batch, batch_idx):
      return self(batch)
  
imports: import os
  import shutil
  import torch
  from omegaconf import OmegaConf
  from pytorch_lightning import Trainer
  from pytorch_lightning.utilities import rank_zero_only
  from nemo.core import ModelPT
  from nemo.utils import logging
  from nemo.utils.exp_manager import ExpManagerConfig, exp_manager
label_desc: Use image node_id 7 for calling the ExampleModel obj's underlying member method code with example usage: obj.training_step(batch, batch_idx) and returns: self