code: def configure_optimizers(self):
      optimizer = AdamW(self.parameters(), lr=2e-5)
      return optimizer
  
imports: import logging
  from os.path import join
  import pytorch_lightning
  from pytorch_lightning.loggers import WandbLogger
  from torch.optim import AdamW
  import torch.nn
  import torch
  from torchmetrics import F1
  from torch.utils.data import DataLoader, Dataset
  from transformers import AutoTokenizer, AutoModel
label_desc: Use image node_id 6 for calling the BertForTokenClassification obj's underlying member method code with example usage: obj.configure_optimizers() and returns: optimizer