if (StringUtil.isNotBlank(minKey)) {
            min = Integer.parseInt(fessConfig.get(minKey));
        }
        final String maxKey = constraintAnnotation.maxKey();
        if (StringUtil.isNotBlank(maxKey)) {
            max = Integer.parseInt(fessConfig.get(maxKey));
        }
        message = constraintAnnotation.message();
        validateParameters();
    }

    @Override

    // Test field with CustomSize annotation for testing
    @CustomSize(minKey = "test.min", maxKey = "test.max")
    private String testField;

    // Test field with only minKey
    @CustomSize(minKey = "test.min.only")
    private String testFieldMinOnly;

    // Test field with only maxKey
    @CustomSize(maxKey = "test.max.only")
    private String testFieldMaxOnly;

    // Test field with custom message

                return new Class[0];
            }

            @Override
            public String minKey() {
                return "";
            }

            @Override
            public String maxKey() {
                return "";
            }
        };
    }