code: def qvalue(self, obs, action):
      return self.critic_model(obs, action)
  
imports: from cmath import log
  import parl
  import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 3 for calling the MujocoModel obj's underlying member method code with example usage: obj.qvalue(obs, action) and returns: self