code: public static void printVerboseMessage(final String message, final Logger logger) {
          try {
              if (JPService.getProperty(JPVerbose.class).getValue()) {
                  logger.info(message);
              } else {
                  logger.debug(message);
              }
          } catch (final JPServiceException ex) {
              logger.info(message);
              ExceptionPrinter.printHistory("Could not access verbose java property!", ex, logger);
          }
      }
docs: Method prints the given message only in verbose mode on the INFO channel, otherwise the DEBUG channel is used for printing.
  
  @param message the message to print
  @param logger the logger which is used for the message logging.