code: public static PluralRules parseDescription(String description)
              throws ParseException {
  
          description = description.trim();
          return description.length() == 0 ? DEFAULT : new PluralRules(parseRuleChain(description));
      }
docs: Parses a plural rules description and returns a PluralRules.
  @param description the rule description.
  @throws ParseException if the description cannot be parsed.
  The exception index is typically not set, it will be -1.