}

        public String getTimeAdjustTimeMillis() {
            return get(FessEnv.TIME_ADJUST_TIME_MILLIS);
        }

        public Long getTimeAdjustTimeMillisAsLong() {
            return getAsLong(FessEnv.TIME_ADJUST_TIME_MILLIS);
        }

        public String getMailSendMock() {
            return get(FessEnv.MAIL_SEND_MOCK);
        }

        public boolean isMailSendMock() {

                } catch (NumberFormatException e) {
                    return null;
                }
            }

            @Override
            public Long getAsLong(String propertyKey) {
                String value = get(propertyKey);
                if (value == null) {
                    return null;
                }
                try {

     * @param key The key of the setting.
     * @param defaultValue The default value if the setting is not found.
     * @return The setting value as a long.
     */
    public long getAsLong(final String key, final long defaultValue) {
        return getAs(key, defaultValue, Long::parseLong);
    }

    /**
     * Retrieves a setting value as a float.
     * @param key The key of the setting.

  @Beta
  @InlineMe(replacement = "optional.stream()")
  @InlineMeValidationDisabled("Java 9+ API only")
  public static LongStream stream(OptionalLong optional) {
    return optional.isPresent() ? LongStream.of(optional.getAsLong()) : LongStream.empty();
  }

  /**
   * If a value is present in {@code optional}, returns a stream containing only that element,
   * otherwise returns an empty stream.
   *

  @Beta
  @InlineMe(replacement = "optional.stream()")
  @InlineMeValidationDisabled("Java 9+ API only")
  public static LongStream stream(OptionalLong optional) {
    return optional.isPresent() ? LongStream.of(optional.getAsLong()) : LongStream.empty();
  }

  /**
   * If a value is present in {@code optional}, returns a stream containing only that element,
   * otherwise returns an empty stream.
   *