code: def sync_target(self, decay=0):
      for param, target_param in zip(
          self.model.parameters(), self.target_model.parameters()
      ):
          target_param.data.copy_(
              (1 - decay) * param.data + decay * target_param.data
          )
  
file_path: PARL/parl/algorithms/torch/coma.py
imports: import torch
  import os
  from copy import deepcopy
  import parl
  from parl.utils.utils import check_model_method
  import numpy
label_desc: Use image node_id 10 for calling the COMA obj's underlying member method code with example usage: obj.sync_target(decay) without return types