Brought forward from https://github.com/ppy/osu/pull/32250.
SelectedRoom
OnlinePlayTestScene
Room.Playlist
Room.QueueMode
MultiplayerPlaylistItem
RulesetStore
BeatmapManager
RealmRulesetStore
WaitSafely()
RulesetID
Ruleset.ID
Ruleset.OnlineID
Access
Realm
RealmContextFactory
RealmAccess
ContextFactory
Wait
WaitSafely
Can be tested by adding a Thread.Sleep() in DrawableRoomPlaylistItem.load().
TestSceneMultiplayerQueueList