def __len__(self):
        return self.geom_count
Sends zip data to client.
dataset/ETHPy150Open dcramer/django-compositepks/django/contrib/gis/gdal/geometries.py/Polygon.__len__--crossover with--dataset/ETHPy150Open UniversalDevicesInc/Polyglot/polyglot/element_manager/api.py/GenericAPIHandler.send_zip