return comparator;
  }

  @Override
  public @Nullable K firstKey() {
    return sortedDelegate.firstKey();
  }

  @Override
  public @Nullable K lastKey() {
    return sortedDelegate.lastKey();
  }

  @Nullable K higher(K k) {
    Iterator<K> iterator = keySet().tailSet(k).iterator();
    while (iterator.hasNext()) {
      K tmp = iterator.next();

    <artifactId>fess-crawler</artifactId>
    <version>15.2.0-SNAPSHOT</version>
</dependency>

<!-- For LastaFlute DI integration -->
<dependency>
    <groupId>org.codelibs.fess</groupId>
    <artifactId>fess-crawler-lasta</artifactId>
    <version>15.2.0-SNAPSHOT</version>
</dependency>

<!-- For OpenSearch backend -->
<dependency>
    <groupId>org.codelibs.fess</groupId>
    <artifactId>fess-crawler-opensearch</artifactId>

     *
     * @return the list of process types
     */
    protected List<String> getProcessTypeList() {
        final List<String> ptList = new ArrayList<>();
        final String executeType = System.getProperty("lasta.env");
        if (Constants.EXECUTE_TYPE_CRAWLER.equalsIgnoreCase(executeType)) {
            ptList.add(Constants.PROCESS_TYPE_REPLACE);
        } else {
            ptList.add(Constants.PROCESS_TYPE_DISPLAYING);

      return transformEntries(fromMap().headMap(toKey), transformer);
    }

    @Override
    @ParametricNullness
    public K lastKey() {
      return fromMap().lastKey();
    }

    @Override
    public SortedMap<K, V2> subMap(@ParametricNullness K fromKey, @ParametricNullness K toKey) {

      return transformEntries(fromMap().headMap(toKey), transformer);
    }

    @Override
    @ParametricNullness
    public K lastKey() {
      return fromMap().lastKey();
    }

    @Override
    public SortedMap<K, V2> subMap(@ParametricNullness K fromKey, @ParametricNullness K toKey) {

    @Override
    @ParametricNullness
    public K firstKey() {
      return sortedMap().firstKey();
    }

    @Override
    @ParametricNullness
    public K lastKey() {
      return sortedMap().lastKey();
    }

    @Override
    public SortedMap<K, Collection<V>> headMap(@ParametricNullness K toKey) {
      return new SortedAsMap(sortedMap().headMap(toKey));
    }

    SortedMap<String, Collection<Integer>> asMap = multimap.asMap();
    assertEquals(Ordering.natural(), asMap.comparator());
    assertThat(asMap.firstKey()).isEqualTo("foo");
    assertThat(asMap.lastKey()).isEqualTo("tree");
    Set<Integer> fooValues = ImmutableSet.of(1, 3, 7);
    Set<Integer> googleValues = ImmutableSet.of(2, 6);
    Set<Integer> treeValues = ImmutableSet.of(4, 0);

# ========================================================================================
# Framework Default
# =================
# ----------------------------------------------------------
# Lasta Taglib
# ------------
errors.header = <ul class="has-error">
errors.footer = </ul>
errors.prefix = <li><i class="fa fa-exclamation-circle"></i>
errors.suffix = </li>
# ----------------------------------------------------------
# Javax Validator

                cmdList.add("-D" + Constants.FESS_SEARCH_ENGINE_HTTP_ADDRESS + "=" + httpAddress);
            }
        }

        final String systemLastaEnv = System.getProperty("lasta.env");
        if (StringUtil.isNotBlank(systemLastaEnv)) {
            if ("web".equals(systemLastaEnv)) {
                cmdList.add("-Dlasta.env=" + getExecuteType());
            } else {

# ========================================================================================
# Framework Default
# =================
# ----------------------------------------------------------
# Lasta Taglib
# ------------
errors.header = <ul class="has-error">
errors.footer = </ul>
errors.prefix = <li><i class="fa fa-exclamation-circle"></i>
errors.suffix = </li>
# ----------------------------------------------------------
# Javax Validator