code: @Test public void validSlotTest(){
    Assert.assertTrue(factory.isValidJSFSlot("main"));
    Assert.assertFalse(factory.isValidJSFSlot("1.2"));
    Assert.assertTrue(factory.isValidJSFSlot("myfaces"));
    Assert.assertTrue(factory.isValidJSFSlot("myfaces2"));
    Assert.assertTrue(factory.isValidJSFSlot(JsfVersionMarker.JSF_2_0));
    Assert.assertFalse(factory.isValidJSFSlot(JsfVersionMarker.WAR_BUNDLES_JSF_IMPL));
    Assert.assertFalse(factory.isValidJSFSlot("bogus"));
    Assert.assertFalse(factory.isValidJSFSlot("bogus2"));
  }
  