<Properties>
		<Property name="domain.name" value="${sys:fess.log.name:-fess}" />
		<Property name="log.level" value="${sys:fess.log.level:-debug}" />
		<Property name="root.log.level" value="${sys:fess.log.level:-info}" />
		<Property name="log.pattern" value="%d [%t] %-5p %msg%n" />
		<Property name="log.file.basedir" value="${sys:fess.log.path:-target/logs}" />
		<Property name="backup.date.suffix" value="_%d{yyyyMMdd}" />

 *            The type of the first value
 * @param <T2>
 *            The type of the second value
 */
public class Pair<T1, T2> {

    /** The first value */
    protected T1 first;

    /** The second value */
    protected T2 second;

    /**
     * Creates and returns a pair of two values.
     *
     * @param <T1>
     *            The type of the first value
     * @param <T2>

    }
    return value;
  }

  @CanIgnoreReturnValue
  static long checkNonnegative(long value, String name) {
    if (value < 0) {
      throw new IllegalArgumentException(name + " cannot be negative but was: " + value);
    }
    return value;
  }

  static void checkPositive(int value, String name) {
    if (value <= 0) {

     * comment: The prefix of subject to show test environment or not
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getMailSubjectTestPrefix();

    /**
     * Get the value for the key 'mail.return.path'. <br>
     * The value is, e.g. root@localhost <br>
     * comment: The common return path of all mail

    }

    public void setCreatedTime(Long value) {
        registerModifiedProperty("createdTime");
        this.createdTime = value;
    }

    public Integer getMaxSize() {
        checkSpecifiedProperty("maxSize");
        return maxSize;
    }

    public void setMaxSize(Integer value) {
        registerModifiedProperty("maxSize");
        this.maxSize = value;
    }

    public String getQuery() {

    public boolean containsValue(final Object value) {
        return parent.containsValue(value);
    }

    @Override
    public V get(final Object key) {
        final V value = parent.get(key);
        if (value != null) {
            return value;
        }
        return parent.get(toCamelCase(key));
    }

    @Override
    public V put(final K key, final V value) {
        return parent.put(key, value);

    @Override
    public boolean isValid(final String value, final ConstraintValidatorContext context) {
        return determineValid(value);
    }

    /**
     * Determines if the given value is a valid cron expression.
     * @param value the value to validate
     * @return true if valid, false otherwise
     */
    protected boolean determineValid(final String value) {

        }
    }

    /**
     * Sets the value of the given {@link Field} representing a {@code static} field to the specified new value.
     *
     * @param field the field (must not be {@literal null})
     * @param value the new value for the {@literal static} field
     * @throws IllegalAccessRuntimeException if the field cannot be accessed

    }

    public void setName(String value) {
        registerModifiedProperty("name");
        this.name = value;
    }

    public String getSessionId() {
        checkSpecifiedProperty("sessionId");
        return convertEmptyToNull(sessionId);
    }

    public void setSessionId(String value) {
        registerModifiedProperty("sessionId");
        this.sessionId = value;
    }

    public void setCreatedTime(Long value) {
        registerModifiedProperty("createdTime");
        this.createdTime = value;
    }

    public Integer getSortOrder() {
        checkSpecifiedProperty("sortOrder");
        return sortOrder;
    }

    public void setSortOrder(Integer value) {
        registerModifiedProperty("sortOrder");
        this.sortOrder = value;
    }