@Test
    void fully_observed_distributor_timestamp_not_included_in_state() {
        final NodeState nodeState = new NodeState(NodeType.DISTRIBUTOR, State.UP);
        nodeState.setStartTimestamp(6000);

        final ClusterFixture fixture = ClusterFixture.forFlatCluster(5)
                .bringEntireClusterUp()
                .reportDistributorNodeState(0, nodeState);

        final NodeInfo nodeInfo = fixture.cluster.getNodeInfo(new Node(NodeType.DISTRIBUTOR, 0));
        nodeInfo.setStartTimestamp(6000);

        final AnnotatedClusterState state = generateFromFixtureWithDefaultParams(fixture);
        assertThat(state.toString(), equalTo("distributor:5 storage:5"));
    }
Maintenance mode overrides all reported states, even Down.
clustercontroller-core/src/test/java/com/yahoo/vespa/clustercontroller/core/ClusterStateGeneratorTest.java