vaadin-framework/src/com/vaadin/demo/sampler/gwt/SamplerWidgetSet.gwt.xml

<module>
	<!-- Inherit the DefaultWidgetSet -->
	<inherits name="com.vaadin.terminal.gwt.DefaultWidgetSet" /> 
	
	<!-- Tracker -->
	<script src="http://www.google-analytics.com/ga.js" />
	
	<!-- Prettify  -->
	<stylesheet src="prettify/prettify.css"/>
	<script src="prettify/prettify.js" />

</module>