code: def request_service(document_store: DocumentStore):
      return RequestService(store=document_store)
  
imports: from textwrap import dedent
  from faker import Faker
  import pytest
  import syft
  from syft.client.client import SyftClient
  from syft.node.worker import Worker
  from syft.service.action.action_object import ActionObject
  from syft.service.action.action_permissions import ActionPermission
  from syft.service.code.user_code import UserCodeStatus
  from syft.service.context import ChangeContext
  from syft.service.request.request import ActionStoreChange
  from syft.service.request.request import ObjectMutation
  from syft.service.request.request import RequestStatus
  from syft.service.request.request import UserCodeStatusChange
  from syft.service.request.request_service import RequestService
  from syft.service.response import SyftError
  from syft.service.response import SyftSuccess
  from syft.service.settings.settings_service import SettingsService
  from syft.store.document_store import DocumentStore
  from syft.store.linked_obj import LinkedObject
label_desc: Use image node_id 1 for calling a global function with example usage: request_service(document_store) and returns: RequestService