code: def predict(self, obs):
      """Use the policy model to predict actions of observations.
  
      Args:
          obs(layers.data):  data layer of observations.
      Returns:
          tensor of predicted actions.
      """
      return self.model.predict(obs)
  
imports: import parl
label_desc: Use image node_id 2 for calling the ES obj's underlying member method code with example usage: obj.predict(obs) and returns: self