code: def install_importhook(
      config: Config,
  ) -> rewrite.AssertionRewritingHook:
      """Try to install the rewrite hook, raise SystemError if it fails."""
      config.stash[assertstate_key] = AssertionState(config, "rewrite")
      config.stash[
          assertstate_key
      ].hook = hook = rewrite.AssertionRewritingHook(config)
      sys.meta_path.insert(0, hook)
      config.stash[assertstate_key].trace(
          "installed rewrite import hook"
      )
  
      def undo() -> None:
          hook = config.stash[assertstate_key].hook
          if hook is not None and hook in sys.meta_path:
              sys.meta_path.remove(hook)
  
      config.add_cleanup(undo)
      return hook
  
imports: import sys
  from typing import Any
  from typing import Generator
  from typing import List
  from typing import Optional
  from typing import TYPE_CHECKING
  from _pytest.assertion import rewrite
  from _pytest.assertion import truncate
  from _pytest.assertion import util
  from _pytest.assertion.rewrite import assertstate_key
  from _pytest.config import Config
  from _pytest.config import hookimpl
  from _pytest.config.argparsing import Parser
  from _pytest.nodes import Item
label_desc: Use image node_id 3 for calling a global function with example usage: install_importhook(config) and returns: hook