Github user tabish121 commented on the issue:
https://github.com/apache/activemq-artemis/pull/2256
@jbertram yes, the broker can add additional message annotations as long as
those being added follow the rules from the spec, if the user adds something
that the remote doesn't understand and it is not prefixed with "x-opt" the
remote can just kill the link.
http://docs.oasis-open.org/amqp/core/v1.0/os/amqp-core-messaging-v1.0-os.html#type-annotations---
