Key backup: Expose the number of keys stored in the backup
so that matrix clients can compare it with the number of keys they have locally.
@@ -172,6 +172,7 @@ On success, returns a JSON object with keys:
- `auth_data` (object): Required. Same as in the body parameters for
`POST /room_keys/version`.
- `version` (string): Required. The backup version.
+- `count` (number): Required. The number of keys stored in the backup.
Error codes:
