aws/aws-sdk-java — pull request #64 by 4th-line (2013-04-20 12:30:46+00:00)
Title: Add support for set of arbitrary objects for DynamoDB

Highly inspired by
https://forums.aws.amazon.com/thread.jspa?messageID=377129񜄴
See also https://forums.aws.amazon.com/thread.jspa?threadID=116225