code: def forward(self, obs, action):
      q = F.relu(self.l1(obs))
      q = F.relu(self.l2(torch.cat([q, action], 1)))
      return self.l3(q)
  
file_path: PARL/benchmark/torch/ddpg/mujoco_model.py
imports: import parl
  import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 2 for calling the Critic obj's underlying member method code with example usage: obj.forward(obs, action) and returns: self