code: def configure_optimizers(self):
      return Adam(self.parameters(), lr=self.args.lr)
  
file_path: guildai/examples/pytorch-lightning/mnist.py
imports: import os
  import argparse
  import torch
  from torch import nn
  from torch.nn import functional
  from torch.optim import Adam
  from torch.utils.data import DataLoader, random_split
  from torchvision import datasets, transforms
  from torchvision.datasets import MNIST
  from pytorch_lightning import Trainer
  from pytorch_lightning.core.lightning import LightningModule
label_desc: Use image node_id 4 for calling the LitMNIST obj's underlying member method code with example usage: obj.configure_optimizers() and returns: Adam