Repository repository = new VFSRepository(producer.getIoService());
((VFSRepository)repository).setDescriptor(descriptor);
boolean rootFolderExists = repository.directoryExists("/test");
assertFalse(rootFolderExists);
Directory directoryId = repository.createDirectory("/test");
assertNotNull(directoryId);
assertEquals("test", directoryId.getName());
assertEquals("/", directoryId.getLocation());
assertNotNull(directoryId.getUniqueId());