class_docstr: Abstract agent class.
class_docstr_tok: ["Abstract","agent","class","."]
docstr: Prepare for a new episode.
  
  Returns:
      None
docstr_tok: ["Prepare","for","a","new","episode",".","Returns",":","None"]
code: def stop_episode(self):
      """Prepare for a new episode.
  
      Returns:
          None
      """
      raise NotImplementedError()
  
imports: from abc import ABCMeta
  from abc import abstractmethod
  from abc import abstractproperty
  import os
  from chainer import serializers
  import numpy
  import warnings
label_desc: Use image node_id 4 for calling the Agent obj's underlying member method code with example usage: obj.stop_episode() without return types