checkNotNull(future);
    try {
      return getUninterruptibly(future);
    } catch (ExecutionException e) {
      wrapAndThrowUnchecked(e.getCause());
      throw new AssertionError();
    }
  }

  private static void wrapAndThrowUnchecked(Throwable cause) {
    if (cause instanceof Error) {
      throw new ExecutionError((Error) cause);
    }
    /*