@DictProperty('environ', 'bottle.request.params', read_only=True)
    def params(self):
        params = FormsDict()
        for key, value in self.query.allitems():
            params[key] = value
        for key, value in self.forms.allitems():
            params[key] = value
        return params
Returns the symmetric difference of the geographic field in a 
dataset/ETHPy150Open Arelle/Arelle/arelle/webserver/bottle.py/BaseRequest.params--crossover with--dataset/ETHPy150Open dcramer/django-compositepks/django/contrib/gis/db/models/query.py/GeoQuerySet.sym_difference