docs: public static String generateRevisionNumber(final ContentSpec contentSpec) {
          final StringBuilder rev = new StringBuilder();
  
          rev.append(generateRevision(contentSpec));
  
          // Add the separator
          rev.append("-");
  
          // Build the pubsnumber part of the revision number.
          final Integer pubsnum = contentSpec.getPubsNumber();
          if (pubsnum == null) {
              rev.append(BuilderConstants.DEFAULT_PUBSNUMBER);
          } else {
              rev.append(pubsnum);
          }
  
          return rev.toString();
      }