code: def stage_protocol_changes(self) -> Result[SyftSuccess, SyftError]:
      change_count = 0
      current_history = self.protocol_history
      if "dev" not in current_history:
          current_history["dev"] = {}
          current_history["dev"]["object_versions"] = {}
      object_versions = current_history["dev"]["object_versions"]
      for canonical_name, versions in self.diff.items():
          for version, version_metadata in versions.items():
              if canonical_name not in object_versions:
                  object_versions[canonical_name] = {}
              change_count += 1
              action = version_metadata["action"]
  
              # Allow removal of class that only been staged to dev
              if (
                  action == "remove"
                  and str(version) in object_versions[canonical_name]
              ):
                  # Delete the whole class if only single version exists
                  if len(object_versions[canonical_name]) == 1:
                      del object_versions[canonical_name]
                  else:
                      # In case of multiple versions of the class only delete the selected
                      del object_versions[canonical_name][str(version)]
  
              else:  # Add or overwrite existing data in dev
                  object_versions[canonical_name][
                      str(version)
                  ] = version_metadata
  
          # Sort the version dict
          object_versions[canonical_name] = sort_dict_naturally(
              object_versions.get(canonical_name, {})
          )
  
      current_history["dev"]["object_versions"] = object_versions
  
      # trim empty dev
      if len(current_history["dev"]["object_versions"]) == 0:
          del current_history["dev"]
  
      self.save_history(current_history)
      self.load_state()
      return SyftSuccess(
          message=f"{change_count} Protocol Updates Staged to dev"
      )
  
imports: from collections import defaultdict
  from collections.abc import MutableMapping
  from collections.abc import MutableSequence
  import hashlib
  import json
  import os
  from pathlib import Path
  import re
  from typing import Any
  from typing import Dict
  from typing import Optional
  from typing import Tuple
  from typing import Type
  from typing import Union
  from result import OkErr
  from result import Result
  from ..serde.recursive import TYPE_BANK
  from ..service.response import SyftError
  from ..service.response import SyftException
  from ..service.response import SyftSuccess
  from ..types.dicttuple import DictTuple
  from ..types.syft_object import SyftBaseObject
label_desc: Use image node_id 10 for calling the DataProtocol obj's underlying member method code with example usage: obj.stage_protocol_changes() and returns: SyftSuccess