private DocsumDefinitionSet createPartialDocsumDefinitionSet3() {
        var schema = new Schema.Builder("test");
        var summary = new DocumentSummary.Builder("default");
        summary.add(new DocumentSummary.Field("integer_field", "integer"));
        summary.add(new DocumentSummary.Field("string_field", "string"));
        schema.add(summary.build());
        return new DocsumDefinitionSet(schema.build());
    }
Asserts that the expected fields are what is returned from every access method of Hit
container-search/src/test/java/com/yahoo/prelude/fastsearch/SlimeSummaryTestCase.java