### Question:
NetworkDefinition { public Document getDocument() { return document; }  Document getDocument(); void setDocument(Document value); List<Node> getNode(); List<Bus> getBus();  }### Answer:
@Test public void testGetDocument() { doc = netdef.getDocument(); assertNotNull(doc); assertTrue("Unexpected content within 'Document' element", doc .getContent().contains("A car designed by Homer J. Simpson")); }