call, it invokes the indicated handler and gives it the specific set of instances for processing.</p><p>Rules contain matching predicates. A predicate is an attribute expression which returns a true/false value. A rule only takes effect if its predicate expression returns true. Otherwise, it’s like the rule didn’t exist and the indicated handler isn’t invoked.</p><h2 id=future>Future</h2><p>We are working to improve the end to end experience of using and developing adapters. For example, several new f