code: @Override
      public Promise<FileProps> props(String path) {
          return adapter.toPromise(handler -> vertx.fileSystem().props(path, handler));
      }
docs: Obtain properties for the file represented by {@code path}, asynchronously.
  <p>
  If the file is a link, the link will be followed.
  
  @param path the path to the file
  @return a promise for file properties