Runs the test case.
Document doc;
DocumentType docType;
DOMImplementation domImpl;
String publicId;
String systemId;
doc = (Document) load("staffNS", false);
domImpl = doc.getImplementation();
docType = domImpl.createDocumentType("l2:root", "PUB", "SYS");
publicId = docType.getPublicId();
systemId = docType.getSystemId();
assertEquals("documenttypepublicid01", "PUB", publicId);
assertEquals("documenttypesystemid01", "SYS", systemId);