setupTraverser(TRAVERSER_NAME_LONG_RUNNING,
new LongRunningQueryTraverser());
setupTraverser(TRAVERSER_NAME_NEVER_ENDING,
new NeverEndingQueryTraverser());
setupTraverser(TRAVERSER_NAME_INTERRUPTIBLE,
new InterruptibleQueryTraverser());
setupTraverser(TRAVERSER_NAME_CANCELLABLE,
new CancellableQueryTraverser());
}