public void unregisterEventNotification(String id) {
        removeGrantsForTarget(grnRegistry.newGRN(GRNTypes.EVENT_NOTIFICATION, id));
    }
@Test
    void unregisterEventNotification() {
        entityOwnershipService.unregisterEventNotification("1234");
        assertGrantRemoval(GRNTypes.EVENT_NOTIFICATION, "1234");
    }