S3AsyncClient client = S3AsyncClient.create();
        final CompletableFuture<GetObjectResponse> futureGet =
       client.getObject(
            GetObjectRequest.builder()
                .bucket(awsS3Config.getBucketName())
                .key(finalKeyName)
                .build(),

       AsyncResponseHandler.toFile(Paths.get(s3TmpFile.getAbsolutePath())));
        futureGet.whenComplete((resp, err) -> {
            try {
                if (resp != null) {
                    System.out.println(resp);
                } else {
                    // Handle error
                    err.printStackTrace();
                }
            } finally {
                // Lets the application shut down. Only close the client when you are completely done with it
                FunctionalUtils.invokeSafely(client::close);
            }
        });

if (ENVIRONMENT_LOCAL)
        {
            ClientConfiguration clientConfig = new ClientConfiguration();
            clientConfig.setProtocol(Protocol.HTTP);
            clientConfig.setProxyHost(8888);

             //Attempt to connect using Access Key and SecretKey
            BasicAWSCredentials basicAWSCredentials = new BasicAWSCredentials(awsS3Config.getIamKey(), awsS3Config.getIamSecretKey());

            clientConfig.setProxyHost("myproxyhost.bla");
            clientConfig.setProxyPort(8888);
            AWSStaticCredentialsProvider
                awsStaticCredentialsProvider =
                new AWSStaticCredentialsProvider(basicAWSCredentials);

            this.amazonS3 = AmazonS3ClientBuilder.standard()
                .withRegion(awsS3Config.getRegion())
                .withClientConfiguration(clientConfig)
                .withCredentials(awsStaticCredentialsProvider)
                .build();
        }
        else //not local env, use EC2 instance authentication
        {
            this.amazonS3 = AmazonS3ClientBuilder.standard()
                .withRegion(awsS3Config.getRegion())
                .withCredentials(new
             InstanceProfileCredentialsProvider(false))
                .build();
        }