public SpansCell(NearSpansUnordered outerInstance, Spans spans, int index)
 {
     this.outerInstance = outerInstance;
     this.spans         = spans;
     this.index         = index;
 }
 public CellQueue(NearSpansUnordered outerInstance, int size)
     : base(size)
 {
     this.outerInstance = outerInstance;
 }