* The key is the rule string, and the value is a pair containing the client name and compiled pattern.
     */
    protected ConcurrentHashMap<String, Pair<String, Pattern>> clientRuleCache = new ConcurrentHashMap<>();

    /**
     * Determines whether the content at the given URL has been updated since the last crawl.

import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.ArtifactUtils;
import org.apache.maven.artifact.metadata.ResolutionGroup;
import org.apache.maven.artifact.repository.ArtifactRepository;

import java.nio.file.Path;
import java.time.Instant;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.maven.RepositoryUtils;
import org.apache.maven.api.Project;
import org.apache.maven.api.RemoteRepository;
import org.apache.maven.api.Session;
import org.apache.maven.api.Version;

public class WitnessClient implements AutoCloseable {
    private final InetAddress witnessServer;
    private final int port;
    private final CIFSContext context;
    private final ConcurrentHashMap<String, WitnessRegistration> registrations;
    private final ConcurrentHashMap<String, WitnessNotificationListener> listeners;
    private final ScheduledExecutorService scheduler;
    private final WitnessRpcClient rpcClient;
    

import javax.inject.Inject;

import java.io.File;
import java.nio.file.Path;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.maven.SimpleLookup;
import org.apache.maven.api.ProducedArtifact;
import org.apache.maven.api.services.ArtifactManager;
import org.apache.maven.artifact.Artifact;

        int threadCount = 10;
        int noncesPerThread = 100;
        ConcurrentHashMap<String, Boolean> allNonces = new ConcurrentHashMap<>();
        CountDownLatch latch = new CountDownLatch(threadCount);
        AtomicInteger collisions = new AtomicInteger(0);

        // When generating nonces concurrently

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.internal.smb2.multichannel;

import java.io.IOException;
import java.util.List;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;

import org.slf4j.Logger;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.commons.codec.DecoderException;
import org.apache.commons.codec.net.URLCodec;
import org.codelibs.core.lang.StringUtil;
import org.lastaflute.web.servlet.filter.LastaPrepareFilter;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.maven.model.InputLocation;
import org.apache.maven.model.Model;
import org.apache.maven.model.building.ModelBuildingRequest;
import org.apache.maven.model.building.ModelProblem.Severity;

 */
package jcifs.smb;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.util.Arrays;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jcifs.CIFSException;
import jcifs.internal.smb2.nego.PreauthIntegrityNegotiateContext;

/**