docs: public Collection<QueryParser> removeLanguages( String firstLanguage,
                                                      String... additionalLanguages ) {
          Collection<QueryParser> removed = new HashSet<QueryParser>();
          QueryParser parser = removeLanguage(firstLanguage);
          if (parser != null) removed.add(parser);
          for (String language : additionalLanguages) {
              parser = removeLanguage(language);
              if (parser != null) removed.add(parser);
          }
          return removed;
      }