### Question:
GlusterWatchKey implements WatchKey { boolean checkDeleted(List<Path> files, Path f) { GlusterWatchEvent event = events.get(f); if (!files.contains(f) && !StandardWatchEventKinds.ENTRY_DELETE.name().equals(event.kind().name())) { event.setLastModified((new Date()).getTime()); event.setKind(StandardWatchEventKinds.ENTRY_DELETE); event.setCount(event.getCount() + 1); return true; } return false; }  @Override boolean isValid(); boolean update(); @Override synchronized List<WatchEvent<?>> pollEvents(); @Override synchronized boolean reset(); @Override void cancel(); @Override Watchable watchable();  }### Answer:
@Test public void testCheckDeleted() { }