code: private void mDot() throws ServletException {
  		if (serverName == null) {
  			throw new ServletException("serverName init parameter not found");
  		}
  		this.siteSwitcherHandler = new StandardSiteSwitcherHandler(new StandardSiteUrlFactory(serverName),
  				new StandardSiteUrlFactory("m." + serverName), null, new StandardSitePreferenceHandler(
  						new CookieSitePreferenceRepository("." + serverName)), tabletIsMobile);
  	}
docs: Configures a site switcher that redirects to a <code>m.</code> domain for normal site requests that either
  originate from a mobile device or indicate a mobile site preference.
  Uses a {@link CookieSitePreferenceRepository} that saves a cookie that is shared between the two domains.