Difference between AT_PLUS and STATEMENT_PLUS


I am using JAVA couchbase SDK with Spring and I saw the statement_plus scan consistency. I tried to google it. But I didn’t find anything talking about it in great details.

So my question is : is there any difference between AT_PLUS and STATEMENT_PLUS?
If there is a difference, why don’t we find it listed in the documentation as well as NOT_BOUNDED, REQUEST_PLUS and AT_PLUS?

Thank you

At present STATEMENT_PLUS and REQUEST_PLUS are same.