assertEquals(Void.class, ClassHierarchyIntrospector.getMostCommonSuperclass(new Object[]{ null, null }));
assertEquals(Object.class, ClassHierarchyIntrospector.getMostCommonSuperclass(new Object[]{ null, null }));
    public void testMostCommonSuperclassForNullElements() {        // Makes more sense to return null perhaps? ==> Refactor Multicaster        assertEquals(Void.class, ClassHierarchyIntrospector.getMostCommonSuperclass(new Object[]{ null, null }));    }