https://www.ibm.com/docs/en/ibm-mq/9.3.x?topic=mcj2-jmsmessage
JmsMessage
https://helidon.io/docs/v2/apidocs/io.helidon.messaging.connectors.jms/io/helidon/messaging/connectors/jms/JmsMessage.CustomMapper.html
JmsMessage.CustomMapper (Helidon Project 2.6.14 API)
helidonprojectapi