fCraft.RankManager.RaiseRank C# (CSharp) Method

        public static bool RaiseRank( Rank rank ) {
            if( rank == null ) throw new ArgumentNullException( "rank" );
            if( rank == Ranks.First() ) {
                return false;
            }
            Rank nextRankUp = Ranks[rank.Index - 1];
            Ranks[rank.Index - 1] = rank;
            Ranks[rank.Index] = nextRankUp;
            RebuildIndex();
            return true;
        }