java.util.List<Textbox> boxList = slide1.getTextboxByUsage(PresentationDocument.PresentationClass.OUTLINE);
Assert.assertNotNull(boxList);
Assert.assertEquals(2, boxList.size());
Textbox leftTextbox = boxList.get(0);
List list1 = leftTextbox.addList();
list1.addItem("Test outline1");
list1.addItem("Test outline2");
leftTextbox.clearList();
List list3 = leftTextbox.addList();
list3.addItem("Test line3");
list3.addItem("Test line3");