Ancestry.QueryProcessor.Parse.TupleType.ToString C# (CSharp) Method

        public override string ToString()
        {
            return "{ "
                +
                (
                    Attributes.Count == 0
                        ? ":"
                        : String.Join
                        (
                            ",  ",
                            (from a in Attributes select a.ToString())
                            .Union(from r in References select r.ToString())
                            .Union(from k in Keys select k.ToString())
                        )
                ) + " }";
        }