code: def sync_target(self, decay=None):
      if decay is None:
          decay = 1.0 - self.tau
      self.model.sync_weights_to(self.target_model, decay=decay)
  
file_path: PARL/parl/algorithms/paddle/oac.py
imports: import parl
  import paddle
  from paddle.distribution import Normal
  import paddle.nn.functional
  from parl.utils.utils import check_model_method
  from copy import deepcopy
  import math
label_desc: Use image node_id 8 for calling the OAC obj's underlying member method code with example usage: obj.sync_target(decay) without return types