synchronized (mutex) {
        return delegate().set(index, element);
      }
    }

    @Override
    public void replaceAll(UnaryOperator<E> operator) {
      synchronized (mutex) {
        delegate().replaceAll(operator);
      }
    }

    @Override
    public void sort(@Nullable Comparator<? super E> c) {
      synchronized (mutex) {
        delegate().sort(c);
      }
    }

import com.google.common.collect.testing.features.CollectionFeature;
import java.util.ArrayList;
import java.util.List;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@code forEach} operations on a collection. Can't be invoked
 * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible

import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@code lastIndexOf()} operations on a list. Can't be invoked
 * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
 *
 * @author Chris Povirk
 */
@GwtCompatible

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.testing.features.CollectionSize;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@code toArray()} operations on a list. Can't be invoked
 * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
 *
 * @author Chris Povirk
 */
@GwtCompatible

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.testing.features.CollectionFeature;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests offer operations on a queue. Can't be invoked directly; please
 * see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
 *
 * @author Jared Levy
 */
@GwtCompatible

## Cluster Replication Metrics

Metrics marked as ``Site Replication Only`` only populate on deployments with [Site Replication](https://docs.min.io/community/minio-object-store/operations/install-deploy-manage/multi-site-replication.html) configurations.

/**
 * Admin action for maintenance operations including reindexing, log management,
 * and system diagnostics.
 */
public class AdminMaintenanceAction extends FessAdminAction {

    /**
     * Default constructor for AdminMaintenanceAction.
     */
    public AdminMaintenanceAction() {
        super();
    }

    /**
     * Role identifier for admin maintenance operations.
     */

import org.opensearch.common.settings.Settings;
import org.opensearch.common.settings.Settings.Builder;
import org.opensearch.transport.client.Client;

/**
 * OpenSearch client implementation specifically for crawler operations.
 * Extends FesenClient to provide search engine connectivity for the crawler components.
 */
public class CrawlerEngineClient extends FesenClient {

    /**
     * Creates a new instance of CrawlerEngineClient.

import java.io.IOException;

import jcifs.smb1.dcerpc.DcerpcHandle;
import jcifs.smb1.dcerpc.rpc;
import jcifs.smb1.smb1.SmbException;

/**
 * LSA policy handle for Local Security Authority operations.
 */
public class LsaPolicyHandle extends rpc.policy_handle {

    DcerpcHandle handle;

    /**
     * Constructs an LSA policy handle.
     *
     * @param handle the DCERPC handle

import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests removeAll operations on a list. Can't be invoked directly;
 * please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
 *
 * @author George van den Driessche
 */
@GwtCompatible