code: public void shutdown() {
          LOGGER.entering();
          if (launcher == null) {
              return;
          }
  
          if (!isRunning()) {
              return;
          }
  
          try {
              launcher.shutdown();
          } catch (Exception e) { // NOSONAR
              LOGGER.log(Level.SEVERE, e.getMessage(), e);
          }
          LOGGER.exiting();
      }
docs: Shutdown the instance. Calls {@link SeLionGridLauncherV3#shutdown()} for the instance associated with this
  object.