List<WatchEvent<?>> events = ws.poll().pollEvents();
assertEquals( 2, events.size() ); //adds files
final VersionAttributeView v = ioService.getFileAttributeView( f1, VersionAttributeView.class );
assertNotNull( v );
assertEquals( 2, v.readAttributes().history().records().size() );
final VersionAttributeView v2 = ioService.getFileAttributeView( f2, VersionAttributeView.class );
assertNotNull( v2 );
assertEquals( 3, v2.readAttributes().history().records().size() );