@Test
    void testWordAlternatives() {
        QueryTree x = parse("select * from sources * where foo contains alternatives({trees: 1.0, \"tree\": 0.7})");
        Item root = x.getRoot();
        assertSame(WordAlternativesItem.class, root.getClass());
        WordAlternativesItem alternatives = (WordAlternativesItem) root;
        checkWordAlternativesContent(alternatives);
    }
Specification for the conversion of YQL+ expressions to Vespa search queries.

@author Steinar Knutsen
@author Stian Kristoffersen
container-search/src/test/java/com/yahoo/search/yql/YqlParserTestCase.java