code: def all_layers():
      from calamari_ocr.ocr.model.layers.bilstm import BiLSTMLayerParams
      from calamari_ocr.ocr.model.layers.concat import ConcatLayerParams
      from calamari_ocr.ocr.model.layers.conv2d import Conv2DLayerParams
      from calamari_ocr.ocr.model.layers.dilatedblock import (
          DilatedBlockLayerParams,
      )
      from calamari_ocr.ocr.model.layers.dropout import (
          DropoutLayerParams,
      )
      from calamari_ocr.ocr.model.layers.pool2d import (
          MaxPool2DLayerParams,
      )
      from calamari_ocr.ocr.model.layers.transposedconv2d import (
          TransposedConv2DLayerParams,
      )
  
      return [
          Conv2DLayerParams,
          ConcatLayerParams,
          MaxPool2DLayerParams,
          BiLSTMLayerParams,
          DropoutLayerParams,
          DilatedBlockLayerParams,
          TransposedConv2DLayerParams,
      ]
  
file_path: calamari/calamari_ocr/ocr/model/params.py
imports: from dataclasses import dataclass, field
  from typing import List, Tuple, Any, Union
  from paiargparse import pai_dataclass, pai_meta
  from tfaip.model.modelbaseparams import ModelBaseParams
  from calamari_ocr.ocr.model.layers.layer import LayerParams, IntVec2D
label_desc: Use image node_id 2 for calling a global function with example usage: all_layers() and returns: list