public static List<Event> computeEventDiff(final Params params) {
        final List<Event> events = new ArrayList<>();

        emitPerNodeDiffEvents(createBaselineParams(params), events);
        emitWholeClusterDiffEvent(createBaselineParams(params), events);
        emitDerivedBucketSpaceStatesDiffEvents(params, events);
        return events;
    }
@Test
    void storage_node_maintenance_grace_period_event_only_emitted_on_maintenance_to_down_edge() {
        final EventFixture fixture = EventFixture.createForNodes(3)
                .clusterStateBefore("distributor:3 storage:3 .0.s:u")
                .clusterStateAfter("distributor:3 storage:3 .0.s:d")
                .maxMaintenanceGracePeriodTimeMs(123_456)
                .storageNodeReasonAfter(0, NodeStateReason.NODE_NOT_BACK_UP_WITHIN_GRACE_PERIOD);
        final List<Event> events = fixture.computeEventDiff();
        assertThat(events.size(), equalTo(1));
        assertThat(events, hasItem(allOf(
                eventForNode(storageNode(0)),
                nodeEventForBaseline())));
    }