store.sync(); store.close();
try { store.sync(); store.close(); } catch ( NamingException e ) { e.printStackTrace();  if ( error == null ) { error = new MultiException( "Grouping many exceptions on root nexus close()" ); }   error.addThrowable( e ); }
    public void close() throws NamingException    {        Iterator list = this.backends.values().iterator();        while ( list.hasNext() )        {            BackingStore store = ( BackingStore ) list.next();            store.sync();            store.close();        }        s_singleton = null;    }