@Override
  public S3ClientBuilder createBuilder(S3Options s3Options) {
    return createBuilder(S3Client.builder(), s3Options);
  }
@Test
  public void testSetProxyConfiguration() {
    when(s3Options.getProxyConfiguration()).thenReturn(ProxyConfiguration.builder().build());

    DefaultS3ClientBuilderFactory.createBuilder(builder, s3Options);
    verify(builder).httpClientBuilder(any(ApacheHttpClient.Builder.class));
    verifyNoMoreInteractions(builder);
  }