if ( ReportEngineService.instance != null ) { return; } ReportEngineService.instance = new ReportEngineService( servletConfig );
initEngineInstance( servletConfig.getServletContext( ) );
	public synchronized static void initEngineInstance(			ServletConfig servletConfig ) throws BirtException	{		if ( ReportEngineService.instance != null )		{			return;		}		ReportEngineService.instance = new ReportEngineService( servletConfig );	}