internal override List <TVertex> GetUVertexList()
        {
            List <TVertex> list = new List <TVertex>(USize);

            list.AddRange(UVertexList.Take(USize));
            return(list);
        }
 internal override bool IsUVertex(TVertex vertex)
 {
     return(USize != 0 && AreInTheSamePartition(UVertexList.First(), vertex));
 }