*     ClosingFuture#from}.
   */
  @Deprecated
  public static <C extends @Nullable Object & @Nullable AutoCloseable>
      ClosingFuture<C> eventuallyClosing(
          ListenableFuture<C> future, final Executor closingExecutor) {
    checkNotNull(closingExecutor);
    final ClosingFuture<C> closingFuture = new ClosingFuture<>(nonCancellationPropagating(future));