class_docstr: Write me
      
code: def _on_train_end(self):
      self.model.set_weights(self.get_weights_list(self.best_seen[1]))
  
imports: from __future__ import division
  from collections import deque
  from copy import deepcopy
  import numpy
  import keras.backend
  from keras.models import Model
  from rl.core import Agent
  from rl.util import *
label_desc: Use image node_id 14 for calling the CEMAgent obj's underlying member method code with example usage: obj._on_train_end() without return types