* client-go: restores behavior of populating the BearerToken field in rest.Config objects constructed from kubeconfig files containing tokenFile config, or from in-cluster configuration. An additional BearerTokenFile field is now populated to enable constructed clients to periodically refresh tokens. ([#71713](https://github.com/kubernetes/kubernetes/pull/71713), [@liggitt](https://github.com/liggitt))...

/// tip

Pydantic یه رفتار خاص داره وقتی از `Optional` یا `Union[Something, None]` بدون مقدار پیش‌فرض استفاده می‌کنی، می‌تونی توی مستندات Pydantic در مورد <a href="https://docs.pydantic.dev/2.3/usage/models/#required-fields" class="external-link" target="_blank">فیلدهای اختیاری لازم</a> بیشتر بخونی.

///

## نوع‌نماها با Annotationهای متادیتا

not in V2 configuration. The MinIO implementation above is based on V2 configuration, however it has been extended to allow both DeleteMarker replication and replication of versioned deletes with the `DeleteMarkerReplication` and `DeleteReplication` fields in the replication configuration above. By default, this is set to `Disabled` unless the user specifies it while adding a replication rule.

When an object is deleted from the source bucket, the corresponding replica version will be marked...

     * purposes, the "count" field, tracking the number of elements, serves as that volatile
     * variable ensuring visibility. This is convenient because this field needs to be read in many
     * read operations anyway:
     *
     * - All (unsynchronized) read operations must first read the "count" field, and should not
     * look at table entries if it is 0.
     *

	// BatchJobExpireObject - object type
	BatchJobExpireObject string = "object"
	// BatchJobExpireDeleted - delete marker type
	BatchJobExpireDeleted string = "deleted"
)

// Validate returns nil if ef has valid fields, validation error otherwise.
func (ef BatchJobExpireFilter) Validate() error {
	switch ef.Type {
	case BatchJobExpireObject:
	case BatchJobExpireDeleted:
		if len(ef.Tags) > 0 || len(ef.Metadata) > 0 {

        assertThrows(NullPointerException.class, () -> raf.writeChars(null));
        assertThrows(NullPointerException.class, () -> raf.writeUTF(null));
    }

    // Small reflection helpers to access private fields for interaction verification
    private static Object getField(Object target, String name) {
        try {
            var f = target.getClass().getDeclaredField(name);
            f.setAccessible(true);

  - true/strict - perform validation and error the request on any invalid fields in the ojbect. It will attempt to perform server-side validation if it is enabled on the apiserver, otherwise it will fall back to client-side validation.
  - warn - perform server-side validation and warn on any invalid fields (but ultimately let the request succeed by dropping any invalid fields from the object). If validation is not available on the server, perform no validation.

- Fixed a bug that prevents kubectl to validate CRDs with schema using x-kubernetes-preserve-unknown-fields on object fields.
  Fix kubectl SchemaError on CRDs with schema using x-kubernetes-preserve-unknown-fields on array types. ([#96562](https://github.com/kubernetes/kubernetes/pull/96562), [@gautierdelorme](https://github.com/gautierdelorme)) [SIG API Machinery and Testing]

    private NdrBuffer mockNdrBuffer;
    @Mock
    private NdrBuffer mockDeferredNdrBuffer;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        // Set the deferred field directly since it's a public field
        mockNdrBuffer.deferred = mockDeferredNdrBuffer;
        // Set up deferred buffer chain to avoid NPE
        mockDeferredNdrBuffer.deferred = mockDeferredNdrBuffer; // Self-reference to avoid NPE

        assertEquals(1, referral.getServerType());
        assertEquals(0, referral.getRFlags());
        assertEquals(node, referral.getNode());

        // Version 1 doesn't have these fields
        assertEquals(0, referral.getProximity());
        assertEquals(0, referral.getTtl());
        assertNull(referral.getRpath());
        assertNull(referral.getAltPath());