@SuppressWarnings("deprecation")
    public static IndexFacts createIndexFacts() {
        String indexInfoConfigID = "file:src/test/java/com/yahoo/prelude/query/parser/test/parseindexinfo.cfg";
        ConfigGetter<IndexInfoConfig> getter = new ConfigGetter<>(IndexInfoConfig.class);
        IndexInfoConfig config = getter.getConfig(indexInfoConfigID);
        return new IndexFacts(new IndexModel(config, (QrSearchersConfig)null));
    }
Returns an unfrozen version of the IndexFacts this will use.
This can be used to add new indexes and passing the resulting IndexFacts to the constructor of this.
container-search/src/test/java/com/yahoo/prelude/query/parser/test/ParsingTester.java