code: def copy_to(self, model):
      m_param = dict(model.named_parameters())
      shadow_params = dict(self.named_buffers())
      for key in m_param:
          if m_param[key].requires_grad:
              m_param[key].data.copy_(
                  shadow_params[self.m_name2s_name[key]].data
              )
          else:
              assert not key in self.m_name2s_name
  
file_path: stablediffusion/ldm/modules/ema.py
imports: import torch
  from torch import nn
label_desc: Use image node_id 4 for calling the LitEma obj's underlying member method code with example usage: obj.copy_to(model) without return types