Model loadModel() {
            try {
                ApplicationPackage application = new MockApplicationPackage.Builder().withEmptyHosts().withEmptyServices().withValidationOverrides(validationOverrides).build();
                DeployState deployState = new DeployState.Builder().applicationPackage(application).now(clock.instant()).build();
                return new VespaModel(deployState);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
Returns the clock used by this, which is fixed at the instant 2000-01-01T00:00:00
configserver/src/test/java/com/yahoo/vespa/config/server/session/SessionRepositoryTest.java