code: def configure_optimizers(self):
      return torch.optim.Adam(self.parameters(), lr=0.001)
  
file_path: fastai/nbs/examples/migrating_lightning.py
imports: from fastai.data.load import DataLoader
  import os, torch
  from torch.nn import functional
  from torchvision.datasets import MNIST
  from torchvision import transforms
  from lightning import LightningModule
label_desc: Use image node_id 4 for calling the LitModel obj's underlying member method code with example usage: obj.configure_optimizers() and returns: torch