code: private void registerSamples() {
  
  		SamplePanelRegistry.registerFactory(CATEGORY_WFS, new ShowcaseSampleDefinition() {
  
  			public SamplePanel create() {
  				return new WfsCapabilitiesPanel();
  			}
  
  			public String getTitle() {
  				return MESSAGES.capabilitiesTitle();
  			}
  
  			public String getShortDescription() {
  				return MESSAGES.capabilitiesShort();
  			}
  
  			public String getDescription() {
  				return MESSAGES.capabilitiesDescription();
  			}
  
  			public String getCategory() {
  				return CATEGORY_WFS;
  			}
  
  			@Override
  			public String getKey() {
  				return "wfscapabilities";
  			}
  		});
  	}
docs: Register samples.