public T ConfigureNext <T>(T nextBand) where T : INumeralBand
 {
     _nextBand = nextBand;
     return(nextBand);
 }
 public NumeralBand(int value, string numeral, INumeralBand negatedBy)
 {
     _negatedBy = negatedBy;
     Value      = value;
     Numeral    = numeral;
 }