CountDownLatch gettersComplete = new CountDownLatch(nThreads);
    for (int i = 0; i < nThreads; i++) {
      int index = i;
      Thread thread =
          new Thread(
              new Runnable() {
                @Override
                public void run() {
                  gettersStartedSignal.countDown();
                  Object value = null;
                  try {

        return whenClosed = new CountDownLatch(1);
      }
    }
  }

  /**
   * Returns an object that can be used to wait until this objects' deferred closeables have all had
   * {@link Runnable}s that close them submitted to each one's closing {@link Executor}.
   */
  @VisibleForTesting
  CountDownLatch whenClosedCountDown() {
    return closeables.whenClosedCountDown();
  }

    }

    @Override
    void maybeClearReferenceQueues() {
      clearReferenceQueue(queueForKeys);
    }
  }

  static final class CleanupMapTask implements Runnable {
    final WeakReference<MapMakerInternalMap<?, ?, ?, ?>> mapReference;

    public CleanupMapTask(MapMakerInternalMap<?, ?, ?, ?> map) {
      this.mapReference = new WeakReference<>(map);
    }

    /**
     * Flushes configuration files to the search engine and executes a callback.
     *
     * @param callback the callback to execute after flushing
     */
    public void flushConfigFiles(final Runnable callback) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

        final String fesenType = fessConfig.getFesenType();
        switch (fesenType) {
        case Constants.FESEN_TYPE_CLOUD:

appearance:none;appearance:none}@media (prefers-reduced-motion:reduce){.custom-range::-webkit-slider-thumb{-webkit-transition:none;transition:none}}.custom-range::-webkit-slider-thumb:active{background-color:#b3d7ff}.custom-range::-webkit-slider-runnable-track{width:100%;height:.5rem;color:transparent;cursor:pointer;background-color:#dee2e6;border-color:transparent;border-radius:1rem}.custom-range::-moz-range-thumb{width:1rem;height:1rem;background-color:#007bff;border:0;border-radius:1rem;-moz-...

(prefers-reduced-motion: reduce) {\n  .custom-range::-webkit-slider-thumb {\n    -webkit-transition: none;\n    transition: none;\n  }\n}\n\n.custom-range::-webkit-slider-thumb:active {\n  background-color: #b3d7ff;\n}\n\n.custom-range::-webkit-slider-runnable-track {\n  width: 100%;\n  height: 0.5rem;\n  color: transparent;\n  cursor: pointer;\n  background-color: #dee2e6;\n  border-color: transparent;\n  border-radius: 1rem;\n}\n\n.custom-range::-moz-range-thumb {\n  width: 1rem;\n  height: 1rem;\n ...

            throw new IOException("Unable to prompt", e);
        }
    }

    @Override
    public String readPassword() throws IOException {
        try {
            return prompter.promptForPassword(null);
        } catch (org.apache.maven.api.services.PrompterException e) {
            throw new IOException("Unable to prompt", e);
        }
    }

    @Override

	logger.FatalIf(lockRPCForceUnlock.Register(gm, lockServer.ForceUnlockHandler), "unable to register handler")
	logger.FatalIf(lockRPCRefresh.Register(gm, lockServer.RefreshHandler), "unable to register handler")
	logger.FatalIf(lockRPCLock.Register(gm, lockServer.LockHandler), "unable to register handler")
	logger.FatalIf(lockRPCUnlock.Register(gm, lockServer.UnlockHandler), "unable to register handler")

import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit tests for {@link Runnables}.
 *
 * @author Olivier Pernet
 */
@GwtCompatible
@NullUnmarked
public class RunnablesTest extends TestCase {
  public void testDoNothingRunnableIsSingleton() {
    assertSame(Runnables.doNothing(), Runnables.doNothing());
  }

import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit tests for {@link Runnables}.
 *
 * @author Olivier Pernet
 */
@GwtCompatible
@NullUnmarked
public class RunnablesTest extends TestCase {
  public void testDoNothingRunnableIsSingleton() {
    assertSame(Runnables.doNothing(), Runnables.doNothing());
  }