code: def moving_mean(self) -> torch.Tensor:
      return self.bn.running_mean
  
imports: import logging
  from typing import Optional
  import numpy
  import torch
  from torch.nn import BatchNorm1d, BatchNorm2d, LayerNorm, Module
  from ludwig.utils.torch_utils import LudwigModule
label_desc: Use image node_id 3 for calling the GhostBatchNormalization obj's underlying member method code with example usage: obj.moving_mean() and returns: self