public static String getProperty(String subdomain, String name) {    	
        final MUCServiceProperties props = propertyMaps.computeIfAbsent( subdomain, MUCServiceProperties::new );
        return props.get(name);
    }
Returns a Jive property.

@param subdomain the subdomain of the service to retrieve a property from
@param name the name of the property to return.
@return the property value specified by name.
xmppserver/src/main/java/org/jivesoftware/openfire/muc/spi/MUCPersistenceManager.java