From 7ec0a141b4bdda0fa67cb1f2af7f321b9963f0b8 Mon Sep 17 00:00:00 2001
From: Patrick Cloke <clokep@users.noreply.github.com>
Date: Wed, 20 Sep 2023 07:48:55 -0400
Subject: Convert more cached return values to immutable types (#16356)

---
 synapse/handlers/relations.py | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

(limited to 'synapse/handlers/relations.py')

diff --git a/synapse/handlers/relations.py b/synapse/handlers/relations.py
index db97f7aede..9b13448cdd 100644
--- a/synapse/handlers/relations.py
+++ b/synapse/handlers/relations.py
@@ -13,7 +13,17 @@
 # limitations under the License.
 import enum
 import logging
-from typing import TYPE_CHECKING, Collection, Dict, FrozenSet, Iterable, List, Optional
+from typing import (
+    TYPE_CHECKING,
+    Collection,
+    Dict,
+    FrozenSet,
+    Iterable,
+    List,
+    Mapping,
+    Optional,
+    Sequence,
+)
 
 import attr
 
@@ -245,7 +255,7 @@ class RelationsHandler:
 
     async def get_references_for_events(
         self, event_ids: Collection[str], ignored_users: FrozenSet[str] = frozenset()
-    ) -> Dict[str, List[_RelatedEvent]]:
+    ) -> Mapping[str, Sequence[_RelatedEvent]]:
         """Get a list of references to the given events.
 
         Args:
-- 
cgit 1.4.1