code: def forward(self, obs):
      x = self.ln1(obs)
      x = F.tanh(self.fc1(x))
      x = self.ln2(x)
      x = F.tanh(self.fc2(x))
  
      if self.multi_discrete:
          policys = []
          for action_out in self.action_outs:
              policy = action_out(x)
              policys.append(policy)
      else:
          policys = self.fc3(x)
      return policys
  
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 Actor obj's underlying member method code with example usage: obj.forward(obs) and returns: policys