//                                                                    ================
    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_log.click_log";
    }

    @Override
    public String asEsIndexType() {
        return "click_log";

    //                                                                    ================
    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_user.group";
    }

    @Override
    public String asEsIndexType() {
        return "group";
    }

    //                                                                    ================
    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.access_token";
    }

    @Override
    public String asEsIndexType() {
        return "access_token";

    //                                                                    ================
    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.duplicate_host";
    }

    @Override
    public String asEsIndexType() {

    //                                                                    ================
    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.elevate_word";
    }

    @Override
    public String asEsIndexType() {
        return "elevate_word";

    //                                                                    ================
    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.key_match";
    }

    @Override
    public String asEsIndexType() {
        return "key_match";

    //                                                                    ================
    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.request_header";
    }

    @Override
    public String asEsIndexType() {

    }

    @Override
    public Set<K> createKeySet() {
      return removeOnlySet(backingSet());
    }

    @Override
    Collection<V> createValues() {
      return Collections2.transform(set, function);
    }

    @Override
    public int size() {
      return backingSet().size();
    }

    @Override
    public boolean containsKey(@CheckForNull Object key) {

    }
  }

  @Override
  @CheckForNull
  public Entry<E> firstEntry() {
    return delegate().firstEntry();
  }

  /**
   * A sensible definition of {@link #firstEntry()} in terms of {@code entrySet().iterator()}.
   *
   * <p>If you override {@link #entrySet()}, you may wish to override {@link #firstEntry()} to
   * forward to this implementation.
   */
  @CheckForNull

      this.backingQueue = backingQueue;
    }

    @Override
    protected Queue<T> delegate() {
      return backingQueue;
    }

    @Override
    public boolean addAll(Collection<? extends T> collection) {
      return standardAddAll(collection);
    }

    @Override
    public void clear() {
      standardClear();
    }

    @Override
    public boolean contains(Object object) {