"Failed to shut down ContextFactoryService: " +
"Failed to shut down the directory service: " +
    public DefaultDirectoryService( String instanceId )    {        if( instanceId == null )        {            throw new NullPointerException( "instanceId" );        }                this.instanceId = instanceId;                // Register shutdown hook.        Runtime.getRuntime().addShutdownHook( new Thread( new Runnable() {            public void run()            {                try                {                    shutdown();                }                catch( NamingException e )                {                    log.warn(                            "Failed to shut down ContextFactoryService: " +                            DefaultDirectoryService.this.instanceId, e );                }            }        }, "ApacheDS Shutdown Hook (" + instanceId + ')' ) );    }