https://aws.amazon.com/blogs/developer/introducing-amazon-s3-transfer-manager-in-the-aws-sdk-for-java-2-x/

https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/transfer-manager.html
https://github.com/aws/aws-sdk-java-v2/blob/master/services-custom/s3-transfer-manager/src/main/java/software/amazon/awssdk/transfer/s3/S3TransferManager.java

https://docs.rs/aws-sdk-s3/latest/aws_sdk_s3/primitives/struct.ByteStream.html#method.into_async_read