public void setSysadmins(Collection<JID> userJIDs) {
        PUBSUB_SYSADMINS.setValue( userJIDs.stream().map(JID::asBareJID).collect(Collectors.toSet()) );
    }
Manager of entities that interact with persistent storage of data (eg: the database).
xmppserver/src/main/java/org/jivesoftware/openfire/pubsub/PubSubModule.java