public interface Numberer
String format(int number, String picture, int groupSize, String groupSeparator, String letterValue)
number - The number to be formattedpicture - The format specification. This is a single component of the format attribute
of xsl:number, e.g. "1", "01", "i", or "a"groupSize - number of digits per group (0 implies no grouping)groupSeparator - string to appear between groups of digitsletterValue - as defined in xsl:number ("alphabetic" or "traditional" or "")