code: def on_validation_model_train(self):
      ...
  
imports: from functools import partial, update_wrapper
  from inspect import getmembers, isfunction
  from unittest import mock
  from unittest.mock import ANY, PropertyMock
  import pytest
  import torch
  from lightning.fabric.utilities.imports import _TORCH_GREATER_EQUAL_2_0
  from lightning.pytorch import Callback, LightningDataModule, LightningModule, Trainer, __version__
  from lightning.pytorch.demos.boring_classes import BoringDataModule, BoringModel, RandomDataset
  from lightning.pytorch.utilities.model_helpers import is_overridden
  from torch import Tensor
  from torch.utils.data import DataLoader
  from tests_pytorch.helpers.runif import RunIf
label_desc: Use image node_id 9 for calling the HookedModel obj's underlying member method code with example usage: obj.on_validation_model_train() without return types