Assert.assertNotNull(aBox);
String textContent = aBox.getTextContent();
Assert.assertEquals(content, textContent);
PresentationDocument presentDoc = PresentationDocument.newPresentationDocument();
Slide slide1 = presentDoc.newSlide(1, "slide1", SlideLayout.TITLE_PLUS_2_TEXT_BLOCK);
Textbox titleTextbox = slide1.getTextboxByUsage(PresentationDocument.PresentationClass.TITLE).get(0);
Assert.assertNotNull(titleTextbox);
titleTextbox.setTextContent("My Title1");
java.util.List<Textbox> boxList = slide1.getTextboxByUsage(PresentationDocument.PresentationClass.OUTLINE);
Assert.assertNotNull(boxList);