code: def restore(self, key: str) -> dict[str, StringIO]:
      if key not in self.cache:
          return {}
      data = self.cache[key]
      return {
          "status": StringIO(data["status"]),
          "warning": StringIO(data["warning"]),
      }
  
imports: from __future__ import annotations
  import shutil
  import subprocess
  import sys
  from collections import namedtuple
  from io import StringIO
  from typing import TYPE_CHECKING, Any, Callable
  import pytest
  from sphinx.testing.util import SphinxTestApp, SphinxTestAppWrapperForSkipBuilding
label_desc: Use image node_id 2 for calling the SharedResult obj's underlying member method code with example usage: obj.restore(key) and returns: dict, dict