Add support for reading scheduled message instructions from specific Message Annotations that are mapped into values that work with the built-in broker scheduler feature.
|x-opt-delivery-time||Analogous to the JMS 2.0 delivery time message property. Value is set in milliseconds
since the Unix Epoch.
|x-opt-delivery-delay||Time in Milliseconds to wait before dispatching the message.|
|x-opt-delivery-repeat||Number of time to reschedule a message sent with a fixed delay.|
|x-opt-delivery-period||The time in ms to wait between successive repeats of a scheduled message.|
|x-opt-delivery-cron||A CronTab entry that controls how a message is scheduled.|