public static void VerifyExistence()
        {
            if (GBB != null && !GBB.Deleted)
                return;

            foreach (Item item in World.Items.Values)
            {
                if (item is GlobalBulletinBoard)
                {
                    GBB = item as GlobalBulletinBoard;
                    return;
                }
            }

            GBB = new GlobalBulletinBoard();
        }
        public static void VerifyExistence()
        {
            if (GBB != null && !GBB.Deleted)
            {
                return;
            }

            foreach (Item item in World.Items.Values)
            {
                if (item is GlobalBulletinBoard)
                {
                    GBB = item as GlobalBulletinBoard;
                    return;
                }
            }

            GBB = new GlobalBulletinBoard();
        }