assertNotNull(target2, "Second instance should not be null");
        assertNotSame(target1, target2, "Instances should be different objects");
    }

    @Test
    public void test_class_has_proper_annotations() {
        // Verify the class doesn't have any inappropriate annotations

        assertNotNull(ComponentUtil.getComponent("crawlingConfigHelper"), "CrawlingConfigHelper should be registered");
        assertNotNull(ComponentUtil.getSystemHelper(), "SystemHelper should be registered");
        assertNotNull(ComponentUtil.getFessConfig(), "FessConfig should be set");
        assertTrue("Component integration test should be fast", true);
    }

    @Test
    public void test_basic_functionality() {

* Existing usages of Java serialization should be migrated to use it.
* It is ok for Serializer to be used as a replacement for Java serialization as a migration step.

        assertNotNull(annotation, "Annotation should be present on field");
        assertEquals("protocolType should be WEB", ProtocolType.WEB, annotation.protocolType());
        assertEquals("message should be default", "{org.lastaflute.validator.constraints.UriType.message}", annotation.message());
        assertEquals("groups should be empty", 0, annotation.groups().length);
        assertEquals("payload should be empty", 0, annotation.payload().length);
    }

        assertNotNull(annotation, "Annotation should be present on field");
        assertEquals("Default message should match", "{jakarta.validation.constraints.Size.message}", getDefaultMessage());
        assertEquals("Default groups should be empty", 0, getDefaultGroups().length);
        assertEquals("Default payload should be empty", 0, getDefaultPayload().length);
        assertEquals("Default minKey should be empty", StringUtil.EMPTY, getDefaultMinKey());

### Migration and Enforcement

* **New code**: All new contributions must use American English
* **Existing code**: British English spellings in existing code should be updated opportunistically when those areas are modified, unless constrained by backward compatibility

Public properties are **stable properties**: they CANNOT be renamed or removed without notice.
While we normally deprecate the feature or behavior itself, changes to the property cannot happen in a minor release.
Public properties must be documented.

**Internal properties** are not part of the Public API.
Internal properties are **unstable properties**: they CAN be renamed or removed without notice.
They are not intended for general use.

# ---------------
constraints.AssertFalse.message = {item} must be false.
constraints.AssertTrue.message = {item} must be true.
constraints.DecimalMax.message = {item} must be less than {value}.
constraints.DecimalMin.message = {item} must be greater than {value}.
constraints.Digits.message = {item} must be a number. (expected: <number>.<number>)
constraints.Future.message = {item} must be a future value.

# ---------------
constraints.AssertFalse.message = {item} must be false.
constraints.AssertTrue.message = {item} must be true.
constraints.DecimalMax.message = {item} must be less than {value}.
constraints.DecimalMin.message = {item} must be greater than {value}.
constraints.Digits.message = {item} must be a number. (expected: <number>.<number>)
constraints.Future.message = {item} must be a future value.

Most properties should have a convention set, so (1) can be treated as a rare case where a value must be provided by a user.