Clone Message in Java ? (for DMQ move to Main Queue)

I have a problem with functionality which is not implemented in all offered programming languages. The use case i work on is a utility to move messages from DMQ back to main queue to re-publish the messages).
The problem is that there is a flag DMQ eligible
https://docs.solace.com/Solace-JMS-API/Setting-Message-Properties.htm#Dead

So i want to do following:

• Subscribe on DMQ

• Take messages 1:1 with just change back to DMQ-eligible = true
  (that is needed as in DMQ it turns - not sure why to false)
  These problems are already discussed in this thread:
  https://solace.community/discussion/527/moving-messages-from-deadletter-queue-to-main-queue-in-solace

• Problem is now that message read can not be changed as set to read only
  and you can not change.
  And copy is only possible in C:
  https://docs.solace.com/Solace-PubSub-Messaging-APIs/API-Developer-Guide/Getting-Message-Properties.htm#Duplicat

What i have done now is to do following and i wonder if there is a better way:

private Message cloneMessage(Message message) {
try {
HashMap<String, Object> propertyMap = new HashMap<>();
Enumeration propertyNames = message.getPropertyNames();
// Read all properties and read in Hashmap
while (propertyNames.hasMoreElements()) {
String property = propertyNames.nextElement().toString();
Object propertyObject = message.getObjectProperty(property);
propertyMap.put(property,propertyObject);
}
// Clear any properties from source message
Iterator propertyIterator = propertyMap.entrySet().iterator();
message.clearProperties();
while (propertyIterator.hasNext()) {
Map.Entry propertyElement = (Map.Entry)propertyIterator.next();
message.setObjectProperty(propertyElement.getKey().toString(),propertyElement.getValue());
}
} catch (Exception e) {
System.out.println("Error cloning message.");
e.printStackTrace();
}

    return message;
}