class_docstr: a layer to replace bn or relu layers
code: def __init__(self, *args, **kwargs):
      super(Identity, self).__init__()
  
file_path: PaddleDetection/ppdet/utils/fuse_utils.py
imports: import copy
  import paddle
  import paddle.nn
label_desc: Use image node_id 1 to create a new Identity object from inherited base classes: nn with example: obj = Identity()