router = APIRouter(on_startup=[router_startup], on_shutdown=[router_shutdown])

    def sub_router_startup() -> None:
        state.sub_router_startup = True

    def sub_router_shutdown() -> None:
        state.sub_router_shutdown = True

    sub_router = APIRouter(
        on_startup=[sub_router_startup], on_shutdown=[sub_router_shutdown]
    )

    router.include_router(sub_router)