code: def fetch_histories_for_user(
      self, context: AuthedServiceContext, user_verify_key
  ) -> CodeHistoriesDict:
      result = self.stash.get_by_verify_key(
          credentials=context.credentials,
          user_verify_key=user_verify_key,
      )
      user_code_service = context.node.get_service("usercodeservice")
  
      def get_code(uid):
          return user_code_service.get_by_uid(context=context, uid=uid)
  
      if result.is_ok():
          code_histories = result.ok()
          code_versions_dict = {}
  
          for code_history in code_histories:
              user_code_list = []
              for uid in code_history.user_code_history:
                  user_code_list.append(get_code(uid))
              code_versions = CodeHistoryView(
                  user_code_history=user_code_list,
                  service_func_name=code_history.service_func_name,
                  comment_history=code_history.comment_history,
              )
              code_versions_dict[
                  code_history.service_func_name
              ] = code_versions
          return CodeHistoriesDict(code_versions=code_versions_dict)
      else:
          return SyftError(message=result.err())
  
imports: from typing import List
  from typing import Optional
  from typing import Union
  from ...serde.serializable import serializable
  from ...store.document_store import DocumentStore
  from ...types.uid import UID
  from ...util.telemetry import instrument
  from ..code.user_code import SubmitUserCode
  from ..code.user_code import UserCode
  from ..context import AuthedServiceContext
  from ..response import SyftError
  from ..response import SyftSuccess
  from ..service import AbstractService
  from ..service import service_method
  from ..user.user_roles import DATA_OWNER_ROLE_LEVEL
  from ..user.user_roles import DATA_SCIENTIST_ROLE_LEVEL
  from .code_history import CodeHistoriesDict
  from .code_history import CodeHistory
  from .code_history import CodeHistoryView
  from .code_history import UsersCodeHistoriesDict
  from .code_history_stash import CodeHistoryStash
label_desc: Use image node_id 6 for calling the CodeHistoryService obj's underlying member method code with example usage: obj.fetch_histories_for_user(context, user_verify_key) and returns: user_code_service, CodeHistoriesDict, SyftError