https://github.com/aws/aws-sdk-java-v2
https://mvnrepository.com/artifact/software.amazon.awssdk
https://mvnrepository.com/artifact/software.amazon.awssdk/s3
https://aws.amazon.com/blogs/developer/aws-sdk-for-java-2-0-developer-preview/
    ! short async s3-client sample
https://docs.aws.amazon.com/sdk-for-java/v2/developer-guide/welcome.html

api
https://sdk.amazonaws.com/java/api/latest/

2018
https://aws.amazon.com/blogs/developer/aws-sdk-for-java-2-x-released/

encrypt
https://github.com/aws/aws-sdk-java-v2/issues/34