code: def __init__(self, **kwargs):
      super(L2Norm, self).__init__(**kwargs)
      warnings.warn(
          "DeprecationWarning: L2Norm in ssd_vgg.py "
          "is deprecated, please use L2Norm in "
          "mmdet/models/necks/ssd_neck.py instead"
      )
  
file_path: mmdetection/mmdet/models/backbones/ssd_vgg.py
imports: import warnings
  import torch.nn
  from mmcv.cnn import VGG
  from mmengine.model import BaseModule
  from mmdet.registry import MODELS
  from ..necks import ssd_neck
label_desc: Use image node_id 1 to create a new L2Norm object from inherited base classes: ssd_neck with example: obj = L2Norm()