}
protected abstract DTDBuilder createDTDBuilder();
public void testIgnoreableElement() throws IOException {
DTDBuilder builder = createDTDBuilder();
builder.addIgnorableElement("ignoreable");
DTD dtd = builder.buildDTD();
Element root = domFactory.createElement("root");
Element normal = domFactory.createElement("normal");
root.addTail(normal);
normal.addTail(domFactory.createText("hello"));