public void testContentModelSemantic_1_2() {
Element el1 = newElement("el1");
Element el2 = newElement("el2");
ContentModel cm1 = newContentModel('+', ',', 0, 0, el1, el2);
assertEquals(cm1.empty(), false);
}
public void testContentModelSemantic_1_3() {
Element el1 = newElement("el1");
Element el2 = newElement("el2");