Runs the test case.
Document doc;
Document newDoc;
Element newElem;
Document ownerDocDoc;
Document ownerDocElem;
DOMImplementation domImpl;
DocumentType docType;
String nullNS = null;
doc = (Document) load("staff", false);
domImpl = doc.getImplementation();
docType = domImpl.createDocumentType("mydoc", nullNS, nullNS);
newDoc = domImpl.createDocument("http://www.w3.org/DOM/Test", "mydoc", docType);
ownerDocDoc = newDoc.getOwnerDocument();
assertNull("nodegetownerdocument02_1", ownerDocDoc);
newElem = newDoc.createElementNS("http://www.w3.org/DOM/Test", "myelem");
ownerDocElem = newElem.getOwnerDocument();
assertNotNull("nodegetownerdocument02_2", ownerDocElem);