code: def _build_module(self, input_layer):
      super()._build_module(input_layer)
      self.output = [self.output, tf.reduce_mean(self.output)]
  
file_path: coach/rl_coach/architectures/tensorflow_components/heads/ddpg_v_head.py
imports: import tensorflow
  from rl_coach.architectures.tensorflow_components.heads import VHead
  from rl_coach.architectures.tensorflow_components.layers import Dense
  from rl_coach.base_parameters import AgentParameters
  from rl_coach.spaces import SpacesDefinition
label_desc: Use image node_id 2 for calling the DDPGVHead obj's underlying member method code with example usage: obj._build_module(input_layer) without return types