//Env
EnvironmentRefsGroupMetaData environmentRefsGroup = new EnvironmentRefsGroupMetaData();
Environment xmlEnv = xml != null ? xml.getJndiEnvironmentRefsGroup() : null;
Environment annEnv = annotation != null ? annotation.getJndiEnvironmentRefsGroup() : null;
environmentRefsGroup.merge(xmlEnv,annEnv, "", "", false);
merged.setJndiEnvironmentRefsGroup(environmentRefsGroup);
//Message Destinations
MessageDestinationsMetaData messageDestinations = new MessageDestinationsMetaData();
messageDestinations.merge(xml.getMessageDestinations(), annotation.getMessageDestinations());