code: def fast_params(self):
      return (
          None if self._fast_params is None else self._fast_params[-1]
      )
  
imports: import abc
  from collections import OrderedDict
  from contextlib import contextmanager
  import typing
  import weakref
  import warnings
  import torch
  from .None import utils
label_desc: Use image node_id 5 for calling the _MonkeyPatchBase obj's underlying member method code with example usage: obj.fast_params() and returns: unknown