code: def predict(self, observations):
      act = self.model.actor_model.act(observations, deterministic=True)
      return act
  
file_path: PARL/parl/algorithms/torch/iql.py
imports: import copy
  import torch
  import torch.nn
  import parl
  import torch.nn.functional
  from parl.utils.utils import check_model_method
label_desc: Use image node_id 2 for calling the IQL obj's underlying member method code with example usage: obj.predict(observations) and returns: act