code: def output_shape(self) -> torch.Size:
      return torch.Size([self.num_features])
  
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 5 for calling the GhostBatchNormalization obj's underlying member method code with example usage: obj.output_shape() and returns: torch