@Deprecated // TODO: Remove on Vespa 9
    default List<StemList> stem(String input, Language language, StemMode mode, boolean removeAccents) {
        return stem(input, mode, language);
    }
Stem input according to specified stemming mode.
This default implementation invokes stem(input, mode, language) and so ignores the removeAccents argument.

@param input    the string to stem.
@param language the language to use for stemming
@param mode     the stemming mode
@param removeAccents whether to normalize accents and similar
@return a list of possible stems. Empty if none.
@throws ProcessingException thrown if there is an exception stemming this input
@deprecated use #stem(String, LinguisticsParameters)
linguistics/src/main/java/com/yahoo/language/process/Stemmer.java