boolean cancelled = future.cancel(mayInterruptIfRunning);
      if (cancelled) {
        close();
      }
      return cancelled;
    }

    void closeIfLeaked() {
      if (status.get().equals(OPEN)) {
        logger
            .get()
            .log(
                SEVERE,
                "Uh oh! An open ClosingFuture has leaked and will close: {0}",