this.priority = priority;
    return this;
  }

  /**
   * Sets the {@link UncaughtExceptionHandler} for new threads created with this ThreadFactory.
   *
   * <p><b>Java 21+ users:</b> use {@link
   * Thread.Builder#uncaughtExceptionHandler(Thread.UncaughtExceptionHandler)} instead.
   *
   * @param uncaughtExceptionHandler the uncaught exception handler for new Threads created with
   *     this ThreadFactory

      new Runnable() {
        @Override
        public void run() {
          completed = true;
        }
      };

  private static final UncaughtExceptionHandler UNCAUGHT_EXCEPTION_HANDLER =
      new UncaughtExceptionHandler() {
        @Override
        public void uncaughtException(Thread t, Throwable e) {
          // No-op
        }
      };

  private ThreadFactoryBuilder builder;

      new Runnable() {
        @Override
        public void run() {
          completed = true;
        }
      };

  private static final UncaughtExceptionHandler UNCAUGHT_EXCEPTION_HANDLER =
      new UncaughtExceptionHandler() {
        @Override
        public void uncaughtException(Thread t, Throwable e) {
          // No-op
        }
      };

  private ThreadFactoryBuilder builder;

import com.google.common.testing.TearDown;
import com.google.common.testing.TearDownStack;
import com.google.common.util.concurrent.testing.TestingExecutors;
import java.lang.Thread.UncaughtExceptionHandler;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.ScheduledExecutorService;

import com.google.common.testing.SerializableTester;
import com.google.common.util.concurrent.Uninterruptibles;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.lang.Thread.UncaughtExceptionHandler;
import java.math.RoundingMode;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.stream.Stream;
import junit.framework.TestCase;

    public void test_setDefaultUncaughtExceptionHandler() {
        final Thread.UncaughtExceptionHandler originalHandler = Thread.getDefaultUncaughtExceptionHandler();
        try {
            final Thread.UncaughtExceptionHandler handler = (t, e) -> {};
            IndexUpdater.setDefaultUncaughtExceptionHandler(handler);
            assertSame(handler, Thread.getDefaultUncaughtExceptionHandler());
        } finally {

import com.google.common.testing.SerializableTester;
import com.google.common.util.concurrent.Uninterruptibles;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.lang.Thread.UncaughtExceptionHandler;
import java.math.RoundingMode;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.stream.Stream;
import junit.framework.TestCase;

    public void setUncaughtExceptionHandler(final UncaughtExceptionHandler eh) {
        super.setUncaughtExceptionHandler(eh);
    }

    /**
     * Sets the default uncaught exception handler for all threads.
     *
     * @param eh the default uncaught exception handler to set
     */
    public static void setDefaultUncaughtExceptionHandler(final UncaughtExceptionHandler eh) {