def get_permissions(self):
        if not self.check_view_permissions() and not self.check_projector_requirements():
            self.permission_denied(self.request)
        return ()
Overridden method to check view and projector permissions. Returns an
dataset/ETHPy150Open OpenSlides/OpenSlides/openslides/utils/rest_api.py/PermissionMixin.get_permissions