@Test
    void testSizeReductionValidationMinimalDecreaseIsAllowed() {
        ValidationTester tester = new ValidationTester(30);

        VespaModel previous = tester.deploy(null, contentServices(3, null), zone, null, CONTAINER_CLUSTER).getFirst();
        tester.deploy(previous, contentServices(2, null), zone, null, CONTAINER_CLUSTER);
    }
Emulate a self-hosted setup in only the sense that it does not set node resources on the provisioned hosts.
config-model/src/test/java/com/yahoo/vespa/model/application/validation/change/ResourcesReductionValidatorTest.java