private static ContentClusterBuilder createClusterBuilderWithGlobalType() {
        return new ContentClusterBuilder()
                .docTypes(List.of(DocType.indexGlobal("global"), DocType.index("regular")));
    }
Unit tests for content search cluster.

@author geirst
config-model/src/test/java/com/yahoo/vespa/model/content/ContentSchemaClusterTest.java