private void doCreationTest(
String publicId, String systemId, String internalDTD,
MarkupFamily markupFamily) {
DocType docType = new DocTypeImpl(
"html", publicId, systemId, internalDTD,
markupFamily);
assertEquals(publicId, docType.getPublicId());
assertEquals(systemId, docType.getSystemId());
assertEquals(internalDTD, docType.getInternalDTD());
}