* {@link ListenableFuture}.
   *
   * <p>Use this method to pass a transformation to {@link #transformAsync(AsyncClosingFunction,
   * Executor)} or to {@link #catchingAsync(Class, AsyncClosingFunction, Executor)} as long as it
   * meets these conditions:
   *
   * <ul>
   *   <li>It does not need to capture any {@link Closeable} objects by calling {@link
   *       DeferredCloser#eventuallyClose(Object, Executor)}.