code: def predict(self, obs):
      prob = self.model.policy(obs)
      _, predict_actions = prob.max(-1)
      return predict_actions
  
file_path: PARL/parl/algorithms/torch/a2c.py
imports: import torch
  from torch.distributions import Categorical
  import torch.nn.functional
  import torch.optim
  import numpy
  import parl
  from parl.utils.utils import check_model_method
label_desc: Use image node_id 5 for calling the A2C obj's underlying member method code with example usage: obj.predict(obs) and returns: predict_actions