How to invalidate the VCS cache programmatically

public static final String VCS_POOL_JMX_NAME = "jboss.jca:name=NXRepository/default,service=ManagedConnectionPool";

    @SuppressWarnings("unchecked")
    public static void invalidateVcsCache() throws Exception {
        ObjectName poolName = ObjectName.getInstance(VCS_POOL_JMX_NAME);
        List<MBeanServer> servers = MBeanServerFactory.findMBeanServer(null);
        for (MBeanServer server : servers) {
            if (server.isRegistered(poolName)) {
                server.invoke(poolName, "flush", new Object[0], new String[0]);
                return;
            }
        }
        throw new UnsupportedOperationException(String.format(
                "'%s' pool could not be found through local JMX lookup",
                poolName));
    }