public void initialize(final CustomSize constraintAnnotation) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String minKey = constraintAnnotation.minKey();
        if (StringUtil.isNotBlank(minKey)) {
            min = Integer.parseInt(fessConfig.get(minKey));
        }
        final String maxKey = constraintAnnotation.maxKey();
        if (StringUtil.isNotBlank(maxKey)) {

    Class<?>[] groups() default {};

    Class<? extends Payload>[] payload() default {};

    /**
     * @return name of size the element must be higher or equal to
     */
    String minKey() default StringUtil.EMPTY;

    /**
     * @return name of size the element must be lower or equal to
     */
    String maxKey() default StringUtil.EMPTY;