private void configureLockCleaner(
     DeploymentExecutionContext context, ConfigurationItem... cisToBeLocked) {
   LockCleaner lockCleaner = (LockCleaner) context.getAttribute(CI_LOCK_CLEANER);
   if (lockCleaner == null) {
     lockCleaner = new LockCleaner(cisToBeLocked);
     context.setAttribute(CI_LOCK_CLEANER, lockCleaner);
   }
 }