http://docs.aws.amazon.com/AmazonS3/latest/dev/notification-content-structure.html
S3 Notification Events in Haskell
http://docs.aws.amazon.com/AmazonS3/latest/dev/notification-content-structure.html
S3 Notification Events in Haskell
http://docs.aws.amazon.com/AmazonS3/latest/dev/notification-content-structure.html
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