code: def __str__(self):
      result = [
          "Dense (num outputs = {})".format(self.action_embedding_width)
      ]
      return "\n".join(result)
  
file_path: coach/rl_coach/architectures/tensorflow_components/heads/wolpertinger_actor_head.py
imports: import tensorflow
  from rl_coach.architectures.tensorflow_components.layers import batchnorm_activation_dropout, Dense
  from rl_coach.architectures.tensorflow_components.heads.head import Head
  from rl_coach.base_parameters import AgentParameters
  from rl_coach.core_types import Embedding
  from rl_coach.spaces import SpacesDefinition, BoxActionSpace
label_desc: Use image node_id 3 for calling the WolpertingerActorHead obj's underlying member method code with example usage: obj.__str__() and returns: str