code: def optimizer(model):
      return torch.optim.AdamW(model.parameters())
  
imports: import sys
  import pytest
  import torch
  from torch import nn
  from torch.utils.data import Dataset
  from kornia.x import Configuration, ObjectDetectionTrainer
  from kornia.x.trainer import Accelerator
label_desc: Use image node_id 4 for calling a global function with example usage: optimizer(model) and returns: torch