@Test
    void testGramsWithSegmentationSubstringSegmented() {
        Searcher searcher = createSearcher();
        assertGramsWithSegmentationSubstringSegmented(new Chain<>(searcher));
        assertGramsWithSegmentationSubstringSegmented(new Chain<>(new CJKSearcher(), searcher));
        assertGramsWithSegmentationSubstringSegmented(new Chain<>(searcher, new CJKSearcher()));
    }
Note that single-term phrases are simplified to just the term at parse time,
so the ngram rewriter cannot know to keep the grams as a phrase in this case.
container-search/src/test/java/com/yahoo/search/querytransform/test/NGramSearcherTestCase.java