public String languageCodeAndStemMode() {
            return language.languageCode() + "/" + stemMode.toString();
        }
Combines the languageCode and the stemMode.
It allows to specify up to 6 (5 StemModes and only language code) analyzers per language.
The `/` is used so that it doesn't conflict with ComponentRegistry keys.
lucene-linguistics/src/main/java/com/yahoo/language/lucene/AnalyzerFactory.java