public String doLogout() {
   AlterableContext ctx = (AlterableContext) beanManager.getContext(SessionScoped.class);
   Bean<?> myBean = beanManager.getBeans(AccountBean.class).iterator().next();
   ctx.destroy(myBean);
   myBean = beanManager.getBeans(ShoppingCartBean.class).iterator().next();
   ctx.destroy(myBean);
   return "/main";
 }
 public String doLogoutAndRemoveCookie() {
   removeCookie();
   user.setUuid(null);
   em.merge(user);
   AlterableContext ctx = (AlterableContext) beanManager.getContext(SessionScoped.class);
   Bean<?> myBean = beanManager.getBeans(AccountBean.class).iterator().next();
   ctx.destroy(myBean);
   myBean = beanManager.getBeans(ShoppingCartBean.class).iterator().next();
   ctx.destroy(myBean);
   return "/main";
 }