Bug 201675 [Automation][Smoke][Regression]Visibility does not work.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/html/buffer/DummyPageBuffer.java
protected HTMLLayoutContext context;
	protected IReportExecutor executor;
	protected boolean isFirstContent = false;
	protected IContent pageContent = null;
	protected IContentEmitter pageEmitter = null;
	public DummyPageBuffer( HTMLLayoutContext context, IReportExecutor executor )
	{
		this.context = context;
		this.executor = executor;
	}
	public void endContainer( IContent content, boolean finished,
			IContentEmitter emitter, boolean visible )
	{
		if ( isFirstContent )
		{
			startPageContent( content );
			isFirstContent = false;
		}
		if ( emitter != null )
		{
			if ( content.getContentType( ) == IContent.PAGE_CONTENT )
			{
				ContentEmitterUtil.endContent( pageContent, emitter );
			}
			else
			{
				ContentEmitterUtil.endContent( content, emitter );
			}
		}
	}