code: def __repr__(self):
      return (
          self.__class__.__name__
          + "("
          + "n_features="
          + str(self.n_features)
          + ", context="
          + str(self.context)
          + ")"
      )
  
imports: import math
  from collections import OrderedDict
  from typing import Optional, Tuple
  import torch
  import torch.nn.functional
  from torch import nn, Tensor
label_desc: Use image node_id 3 for calling the Lookahead obj's underlying member method code with example usage: obj.__repr__() and returns: unknown