code: def __init__(self, mu, module_ema):
      self.mu = mu
      self.module_ema = module_ema
  
imports: import copy
  from collections import OrderedDict
  from dataclasses import dataclass
  from typing import Optional
  import torch
  import warnings
  from torch import nn
  import torch.nn.functional
label_desc: Use image node_id 1 to create a new EMA object  with example: obj = EMA(mu, module_ema)