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-rw-r--r--synapse/handlers/directory.py19
1 files changed, 2 insertions, 17 deletions
diff --git a/synapse/handlers/directory.py b/synapse/handlers/directory.py
index db2104c5f6..921d887b24 100644
--- a/synapse/handlers/directory.py
+++ b/synapse/handlers/directory.py
@@ -14,6 +14,7 @@
 # limitations under the License.
 
 
+import collections
 import logging
 import string
 from typing import List
@@ -283,22 +284,6 @@ class DirectoryHandler(BaseHandler):
             )
 
     @defer.inlineCallbacks
-    def send_room_alias_update_event(self, requester, room_id):
-        aliases = yield self.store.get_aliases_for_room(room_id)
-
-        yield self.event_creation_handler.create_and_send_nonmember_event(
-            requester,
-            {
-                "type": EventTypes.Aliases,
-                "state_key": self.hs.hostname,
-                "room_id": room_id,
-                "sender": requester.user.to_string(),
-                "content": {"aliases": aliases},
-            },
-            ratelimit=False,
-        )
-
-    @defer.inlineCallbacks
     def _update_canonical_alias(self, requester, user_id, room_id, room_alias):
         """
         Send an updated canonical alias event if the removed alias was set as
@@ -326,7 +311,7 @@ class DirectoryHandler(BaseHandler):
         alt_aliases = content.pop("alt_aliases", None)
         # If the aliases are not a list (or not found) do not attempt to modify
         # the list.
-        if isinstance(alt_aliases, list):
+        if isinstance(alt_aliases, collections.Sequence):
             send_update = True
             alt_aliases = [alias for alias in alt_aliases if alias != alias_str]
             if alt_aliases: