code: private void startServices() {
          m_logger.info("Starting services: {}", simpleServiceNames(m_initializedServices));
          for (Service service : m_initializedServices) {
              m_logger.debug("Starting service: " + service.getClass().getSimpleName());
              service.start();
              m_startedServices.add(service);
          }
      }
docs: Start all registered services.