code: @Override
  	protected void onInitialize()
  	{
  		super.onInitialize();
  		// set content of the <title> tag
  		addOrReplace(new Label("title", title = newTitle()));
  		// set content attribute of the <meta name="keywords"> tag
  		addOrReplace(new Label("keywords", "")
  			.add(new AttributeAppender("content", keywords = newKeywords(), " ")));
  		// set content attribute of the <meta name="description"> tag
  		addOrReplace(new Label("description", "")
  			.add(new AttributeAppender("content", description = newDescription(), " ")));
  	}
docs: {@inheritDoc}