@Test
 public void testGetLayoutDecoratorForElement() {
   // Those elements have to SPLIT or JOIN decorator
   assertNull(context.getLayoutDecoratorForElement("B"));
   assertNull(context.getLayoutDecoratorForElement("C"));
   assertNull(context.getLayoutDecoratorForElement("D"));
   // Those elements should have a decorator
   assertNotNull(context.getLayoutDecoratorForElement("A"));
   assertNotNull(context.getLayoutDecoratorForElement("E"));
   // Just a single decorator
   assertEquals(1, context.getLayoutDecoratorForElement("A").size());
   assertEquals(1, context.getLayoutDecoratorForElement("E").size());
 }