GameFramework.RoomManager.AddFieldSceneRoomId C# (CSharp) Method

        private void AddFieldSceneRoomId(int sceneId, int roomId)
        {
            HashSet<int> roomIds;
            if (field_scene_rooms_.TryGetValue(sceneId, out roomIds)) {
                roomIds.Add(roomId);
            } else {
                roomIds = new HashSet<int>();
                roomIds.Add(roomId);
                field_scene_rooms_.Add(sceneId, roomIds);
            }
        }