@Override
 public synchronized long check(JCloudsComputer c) {
   if (c.isIdle() && !c.getNode().isPendingDelete() && !disabled) {
     // Get the retention time, in minutes, from the JCloudsCloud this JCloudsComputer belongs to.
     final int retentionTime = JCloudsCloud.getByName(c.getCloudName()).getRetentionTime();
     if (retentionTime > -1) {
       final long idleMilliseconds = System.currentTimeMillis() - c.getIdleStartMilliseconds();
       if (idleMilliseconds > TimeUnit2.MINUTES.toMillis(retentionTime)) {
         LOGGER.info("Setting " + c.getName() + " to be deleted.");
         if (!c.isOffline()) {
           c.setTemporarilyOffline(true, OfflineCause.create(Messages._DeletedCause()));
         }
         c.getNode().setPendingDelete(true);
       }
     }
   }
   return 1;
 }
 /** Try to connect to it ASAP. */
 @Override
 public void start(JCloudsComputer c) {
   c.connect(false);
 }