code: def forward(self, cent_obs):
      x = self.ln1(cent_obs)
      x = F.tanh(self.fc1(x))
      x = self.ln2(x)
      x = F.tanh(self.fc2(x))
      values = self.v_out(x)
  
      return values
  
file_path: PARL/benchmark/torch/mappo/simple_model.py
imports: import parl
  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(cent_obs) and returns: values