code: def pi_and_v(self, state):
      out = self.head(state)
      return self.pi(out), self.v(out)
  
imports: import argparse
  import os
  import chainer
  from chainer import links
  import gym
  import gym.wrappers
  import numpy
  import chainerrl
  from chainerrl.agents import a3c
  from chainerrl import experiments
  from chainerrl import links
  from chainerrl import misc
  from chainerrl.optimizers.nonbias_weight_decay import NonbiasWeightDecay
  from chainerrl.optimizers import rmsprop_async
  from chainerrl import policy
  from chainerrl.recurrent import RecurrentChainMixin
  from chainerrl import v_function
  from chainerrl.wrappers import atari_wrappers
label_desc: Use image node_id 2 for calling the A3CFF obj's underlying member method code with example usage: obj.pi_and_v(state) and returns: self,  self