public static void refreshProperties(String subdomain) {
        propertyMaps.replace(subdomain, new MUCServiceProperties(subdomain));
    }
Resets (reloads) the properties for a specified subdomain.

@param subdomain the subdomain of the service to reload properties for.
xmppserver/src/main/java/org/jivesoftware/openfire/muc/spi/MUCPersistenceManager.java