code: def _wrapped_model(self):
      return self.model
  
imports: from __future__ import annotations
  import collections
  import copy
  import functools
  import random
  from river import base, linear_model
  from river.utils.math import minkowski_distance, prod
label_desc: Use image node_id 2 for calling the BaseChain obj's underlying member method code with example usage: obj._wrapped_model() and returns: self