def _clone_base(self):
        return Cursor(self.__collection)
This checks the `fid_range` keyword.
dataset/ETHPy150Open blynch/CloudMemeBackend/pymongo/cursor.py/Cursor._clone_base--crossover with--dataset/ETHPy150Open adieu/django-nonrel/django/contrib/gis/utils/layermapping.py/LayerMapping.check_fid_range