code: def __enter__(self):
      return self
  
file_path: baal/baal/bayesian/common.py
imports: import copy
  import warnings
  from typing import Callable, Optional
  import torch
  from torch import nn
label_desc: Use image node_id 4 for calling the BayesianModule obj's underlying member method code with example usage: obj.__enter__() and returns: self