code: def on_train_epoch_end(self) -> None:
      self.elapsed_epochs += 1
      return None
  
file_path: life2vec/src/models/dummy.py
imports: from pytorch_lightning import LightningModule
  import torch
  import time
  from torch.nn.functional import cross_entropy
  import logging
label_desc: Use image node_id 3 for calling the DummyModel obj's underlying member method code with example usage: obj.on_train_epoch_end() and returns: None