hi @arvinderkhosla,
this actually only recently made it back into the 2.x generation of the SDK. It’s scheduled for the upcoming 2.2 version, which is for now in developer preview: http://blog.couchbase.com/javasdk-2.2-dp#enhancement
You can expect this new minor (in the sense MAJOR.MINOR.PATCH, 2.1.3 vs 2.2.0) in the next few month, if not in June.