code: @Deprecated
      public void weakAddWatcher(File file, Listener watcher) {
          weakAddWatcher(file.toPath(), watcher);
      }
docs: Start watching file path and notify watcher for updates on that file.
  The watcher will be kept in a weak reference and will allow GC to delete
  the instance.
  
  @param file The file path to watch.
  @param watcher The watcher to be notified.
  @deprecated Use {@link #weakAddWatcher(Path, Listener)}