def getDTDHandler(self):
        return self._dtd_handler
Update data collection, return did_add, did_apply for
dataset/ETHPy150Open amrdraz/kodr/app/brython/www/src/Lib/xml/sax/xmlreader.py/XMLReader.getDTDHandler--crossover with--dataset/ETHPy150Open glue-viz/glue/glue/core/tests/test_edit_subset_mode.py/apply