* ClosingFuture<List<Row>> rowsFuture =
   *     queryFuture.transformAsync((closer, result) -> result.getRowsClosingFuture(), executor);
   *
   * // Result.writeRowsToOutputStreamFuture() returns a ListenableFuture that resolves to the
   * // number of written rows. openOutputFile() returns a FileOutputStream (which implements
   * // Closeable).
   * ClosingFuture<Integer> rowsFuture2 =

   * ClosingFuture<List<Row>> rowsFuture =
   *     queryFuture.transformAsync((closer, result) -> result.getRowsClosingFuture(), executor);
   *
   * // Result.writeRowsToOutputStreamFuture() returns a ListenableFuture that resolves to the
   * // number of written rows. openOutputFile() returns a FileOutputStream (which implements
   * // Closeable).
   * ClosingFuture<Integer> rowsFuture2 =