return (LoggingService) getServiceBroker().getService(requestor, LoggingService.class, null);
LoggingService ls = (LoggingService) getServiceBroker().getService(requestor, LoggingService.class, null); return LoggingServiceWithPrefix.add(ls, getAgentIdentifier() + ": ");
  public LoggingService getLoggingService(Object requestor) {    return (LoggingService)        getServiceBroker().getService(requestor,                                      LoggingService.class,                                      null);  }