def get_queryset(self):
        return super(SuppressSystemUserMixin, self).get_queryset().exclude(
            email=settings.SYSTEM_USER_EMAIL)
set spatial reference - can be called from model instance
dataset/ETHPy150Open ofa/connect/open_connect/accounts/views.py/SuppressSystemUserMixin.get_queryset--crossover with--dataset/ETHPy150Open modflowpy/flopy/flopy/utils/reference.py/SpatialReference.set_spatialreference