@Test
    void testOverridingContentTypeRemovalValidation() {
        ValidationTester tester = new ValidationTester();

        VespaModel previous = tester.deploy(null, getServices("music"), zone, null, "test.indexing").getFirst();
        tester.deploy(previous, getServices("book"), zone, removalOverride, "test.indexing"); // Allowed due to override
    }
Tests validation of removal of a document type.
Uses the types "music" and "book" as those are supported by the ValidationTester.

@author bratseth
config-model/src/test/java/com/yahoo/vespa/model/application/validation/change/ContentTypeRemovalValidatorTest.java