From 2b5748912d9ec21050dcc3882f1f115563c63804 Mon Sep 17 00:00:00 2001
From: epenet <6771947+epenet@users.noreply.github.com>
Date: Thu, 16 Jun 2022 10:20:08 +0200
Subject: [PATCH] Add lock typing in starline (#73546)

---
 homeassistant/components/starline/lock.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/homeassistant/components/starline/lock.py b/homeassistant/components/starline/lock.py
index 48f91d89809e..3a5c45a2ed1b 100644
--- a/homeassistant/components/starline/lock.py
+++ b/homeassistant/components/starline/lock.py
@@ -1,4 +1,6 @@
 """Support for StarLine lock."""
+from __future__ import annotations
+
 from typing import Any
 
 from homeassistant.components.lock import LockEntity
@@ -66,7 +68,7 @@ class StarlineLock(StarlineEntity, LockEntity):
         )
 
     @property
-    def is_locked(self):
+    def is_locked(self) -> bool | None:
         """Return true if lock is locked."""
         return self._device.car_state.get("arm")