code: @Override
      public void print(
          ChronoDisplay context,
          Appendable buffer,
          AttributeQuery attributes
      ) throws IOException, ChronoException {
  
          NumberSystem numsys = getNumberSystem(attributes);
          TextWidth width = attributes.get(Attributes.TEXT_WIDTH, TextWidth.NARROW);
          int minDigits;
          switch (width) {
              case NARROW:
                  minDigits = 1;
                  break;
              case SHORT:
                  minDigits = 2;
                  break;
              case ABBREVIATED:
                  minDigits = 3;
                  break;
              default:
                  minDigits = 4;
          }
          char zeroChar = (
              attributes.contains(Attributes.ZERO_DIGIT)
                  ? attributes.get(Attributes.ZERO_DIGIT).charValue()
                  : (numsys.isDecimal() ? numsys.getDigits().charAt(0) : '0'));
          this.print(context, buffer, attributes, numsys, zeroChar, minDigits, 10);
  
      }
docs: ~ Methoden ----------------------------------------------------------