def qs_add(self, *args, **kwargs):
        query = self.query.copy()
        if args:
            mdict = MultiDict(args[0])
            for k, v in mdict.items():
                query.add(k, v)
        for k, v in kwargs.items():
            query.add(k, v)
        return self._copy(query=query)
normal load_data dispatches path to factory
dataset/ETHPy150Open SmartTeleMax/iktomi/iktomi/web/url.py/URL.qs_add--crossover with--dataset/ETHPy150Open glue-viz/glue/glue/dialogs/data_wizard/qt/tests/test_data_wizard.py/TestGlueDataDialog.test_load_data_normal