code: public static String formatCurrency(Object data, String currencyCode, Locale locale) {
          return formatCurrency(null, data, currencyCode, locale);
      }
docs: See {@link #formatCurrency(org.rythmengine.template.ITemplate, Object, String, java.util.Locale)}
  
  @param data
  @param currencyCode
  @param locale
  @return the currency string