code: def _init_coarse_decoder(self):
      self.coarse_decoder = copy.deepcopy(self.decoder)
      self.coarse_decoder.r_init = self.ddc_r
      self.coarse_decoder.set_r(self.ddc_r)
  
imports: import copy
  from abc import ABC, abstractmethod
  import torch
  from torch import nn
  from TTS.tts.utils.generic_utils import sequence_mask
label_desc: Use image node_id 4 for calling the TacotronAbstract obj's underlying member method code with example usage: obj._init_coarse_decoder() without return types