docs: public static String fancyStringF(double value, DecimalFormat format, int length, int significant) {
  
          String formatted = fancyString(value, format, length, significant);
  
          int n = length-formatted.length();
          if( n > 0 ) {
              StringBuilder builder = new StringBuilder(n);
              for (int i = 0; i < n; i++) {
                  builder.append(' ');
              }
              return formatted + builder.toString();
          } else {
              return formatted;
          }
      }