langSet.add(normalizeLang);
                        }
                    }
                }
            }
            if (langSet.size() > 1 && langSet.contains(Constants.ALL_LANGUAGES)) {
                return new String[] { Constants.ALL_LANGUAGES };
            }
            langSet.remove(Constants.ALL_LANGUAGES);
            return langSet.toArray(new String[langSet.size()]);
        }

   * element will be contained in this {@code RangeSet} if and only if it is contained in at least
   * one {@code Range} in {@code ranges}.
   *
   * @since 21.0
   */
  public static <C extends Comparable<?>> TreeRangeSet<C> create(Iterable<Range<C>> ranges) {
    TreeRangeSet<C> result = create();
    result.addAll(ranges);
    return result;
  }

            String[] langs = (String[]) propMap.get(QUERY_DEFAULT_LANGUAGES);
            if (langs == null) {
                langs = split(getQueryDefaultLanguages(), ",").get(stream -> stream.map(String::trim).toArray(n -> new String[n]));
                propMap.put(QUERY_DEFAULT_LANGUAGES, langs);

            }
            return normalizeQueryLanguages(langs);
        }

            if (virtualHost != null) {
                tags.add(virtualHost);
            }

            if (sb.length() > 0) {
                final String[] langs = searchLog.getLanguages() == null ? new String[] {} : searchLog.getLanguages().split(",");
                stream(searchLog.getRoles()).of(stream -> stream.forEach(role -> roles.add(role)));

   * works better than Ordering.natural().nullsFirst() because, if null comes before all other
   * values, it lies outside the submap/submultiset ranges we test, and the variety of tests that
   * exercise null handling fail on those subcollections.
   */
  public abstract static class NullsBefore implements Comparator<@Nullable String>, Serializable {

        final StringBuilder buf = new StringBuilder(255);
        try {
            final RequestParameter parameter = RequestParameter.parse(request);
            final String[] langs = searchHelper.getLanguages(request, parameter);

            final SuggestHelper suggestHelper = ComponentUtil.getSuggestHelper();
            final SuggestRequestBuilder builder = suggestHelper.suggester().suggest();