class_docstr: Write me
      
code: def layers(self):
      return self.combined_model.layers[:]
  
imports: from __future__ import division
  import warnings
  import keras.backend
  from keras.models import Model
  from keras.layers import Lambda, Input, Layer, Dense
  from rl.core import Agent
  from rl.policy import EpsGreedyQPolicy, GreedyQPolicy
  from rl.util import *
label_desc: Use image node_id 10 for calling the NAFAgent obj's underlying member method code with example usage: obj.layers() and returns: self