Type get_room as possible coroutine

ypy_websocket/websocket_server.py

@@ -3,6 +3,7 @@
 from contextlib import AsyncExitStack
 from inspect import isawaitable
 from logging import Logger, getLogger
+from typing import Awaitable
 
 from anyio import TASK_STATUS_IGNORED, Event, create_task_group
 from anyio.abc import TaskGroup, TaskStatus
@@ -56,7 +57,7 @@ def started(self) -> Event:
             self._started = Event()
         return self._started
 
-    def get_room(self, name: str) -> YRoom:
+    def get_room(self, name: str) -> YRoom | Awaitable[YRoom]:
         """Get or create a room with the given name.
 
         Arguments: