core/src/main/java/io/methvin/watchservice/AbstractWatchKey.java
final void signalEvent(WatchEvent.Kind<Path> kind, Path context) {
    post(new Event<>(kind, 1, context));
    signal();
  }
final void signalEvent(WatchEvent.Kind<Path> kind, Path context) {
    post(new Event<>(kind, 1, context));
    signal();
  }
WatchEvent not WatchEvent.Kind