code: def _fix_old_checkpoints(params):
      """Makes old checkpoints forward-compatible."""
      if "clip" in params["backbone"]:
          # Fix the layer norm indexing.
          params["backbone"]["clip"]["visual"][
              "transformer"
          ] = _fix_old_layernorm(
              params["backbone"]["clip"]["visual"]["transformer"]
          )
          params["backbone"]["clip"]["text"][
              "transformer"
          ] = _fix_old_layernorm(
              params["backbone"]["clip"]["text"]["transformer"]
          )
  
          # Fix the resblock naming.
          params["backbone"]["clip"]["visual"][
              "transformer"
          ] = _fix_resblock_naming(
              params["backbone"]["clip"]["visual"]["transformer"]
          )
          params["backbone"]["clip"]["text"][
              "transformer"
          ] = _fix_resblock_naming(
              params["backbone"]["clip"]["text"]["transformer"]
          )
      return params
  
imports: import copy
  from typing import Any, Dict, List, Mapping, Optional
  import flax.linen
  from flax.training import checkpoints
  import jax
  import jax.numpy
  import ml_collections
  from scenic.projects.owl_vit import layers
  from scenic.projects.owl_vit import matching_base_models
  from scenic.projects.owl_vit import utils
  from scenic.projects.owl_vit.clip import model
  from scenic.projects.owl_vit.clip import tokenizer
label_desc: Use image node_id 3 for calling a global function with example usage: _fix_old_checkpoints(params) and returns: params