## Other notable changes

### API Machinery

- Remove `GetReference()` and `GetPartialReference()` function from `pkg/api/ref`, as the same function exists also in `staging/src/k8s.io/client-go/tools/ref` ([#80361](https://github.com/kubernetes/kubernetes/pull/80361), [@wojtek-t](https://github.com/wojtek-t))

### Federation

import com.google.errorprone.annotations.concurrent.GuardedBy;
import com.google.j2objc.annotations.J2ObjCIncompatible;
import com.google.j2objc.annotations.WeakOuter;
import java.lang.ref.WeakReference;
import java.time.Duration;
import java.util.ArrayList;
import java.util.EnumSet;
import java.util.IdentityHashMap;
import java.util.List;
import java.util.Map.Entry;
import java.util.concurrent.Executor;

import com.google.common.collect.MapMakerInternalMap.WeakValueEntry;
import com.google.common.collect.MapMakerInternalMap.WeakValueReference;
import com.google.common.testing.NullPointerTester;
import java.lang.ref.Reference;
import java.util.concurrent.atomic.AtomicReferenceArray;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * @author Charles Fry
 */

import com.google.common.collect.MapMakerInternalMap.WeakValueEntry;
import com.google.common.collect.MapMakerInternalMap.WeakValueReference;
import com.google.common.testing.NullPointerTester;
import java.lang.ref.Reference;
import java.util.concurrent.atomic.AtomicReferenceArray;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * @author Charles Fry
 */

### Other notable changes

* CustomResourceDefinitions: OpenAPI v3 validation schemas containing `$ref`references are no longer permitted (valid references could not be constructed previously because property ids were not permitted either). Before upgrading, ensure CRD definitions do not include those `$ref` fields. ([#58438](https://github.com/kubernetes/kubernetes/pull/58438), [@carlory](https://github.com/carlory))

import com.google.common.util.concurrent.SettableFuture;
import com.google.common.util.concurrent.UncheckedExecutionException;
import java.io.Serializable;
import java.lang.ref.Reference;
import java.lang.ref.ReferenceQueue;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import com.google.common.util.concurrent.SettableFuture;
import com.google.common.util.concurrent.UncheckedExecutionException;
import java.io.Serializable;
import java.lang.ref.Reference;
import java.lang.ref.ReferenceQueue;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

- The default value for node-monitor-grace-period has been increased to 50s (earlier 40s) (Ref - https://github.com/kubernetes/kubernetes/issues/121793) ([#126287](https://github.com/kubernetes/kubernetes/pull/126287), [@devppratik](https://github.com/devppratik)) [SIG API Machinery, Apps and Node]

            `tf.raw_ops.DebugNumericSummaryV2`
        *   (since v2.7) `tf.timestamp`. Throws `FailedPrecondition`
        *   (since v2.7) `tf.Variable.scatter_add` (and other scatter methods,
            both on ref and resource variables)
        *   (since v2.7) The random-number-generating ops in the `tf.random`
            module when the global random seed has not yet been set (via