*
 * <p>Cache statistics are incremented according to the following rules:
 *
 * <ul>
 *   <li>When a cache lookup encounters an existing cache entry {@code hitCount} is incremented.
 *   <li>When a cache lookup first encounters a missing cache entry, a new entry is loaded.
 *       <ul>
 *         <li>After successfully loading an entry {@code missCount} and {@code loadSuccessCount}

    private final Lookup lookup;
    private final RuntimeInformation runtimeInformation;

    @Inject
    @SuppressWarnings("checkstyle:ParameterNumber")
    public DefaultSessionFactory(
            RepositorySystem repositorySystem,
            MavenRepositorySystem mavenRepositorySystem,
            Lookup lookup,
            RuntimeInformation runtimeInformation) {

            final Object bean = instantiateObject(implType);
            if (null == value) {
                processConfiguration(lookup, bean, loader, configuration, evaluator, listener);
            } else {
                // Use optimized helper for better performance
                new EnhancedCompositeBeanHelper(lookup, loader, evaluator, listener)
                        .setDefault(bean, value, configuration);
            }

import java.util.Map;
import java.util.Optional;

import org.apache.maven.api.services.Lookup;
import org.apache.maven.api.services.LookupException;

import static java.util.Objects.requireNonNull;

/**
 * Proto-{@link Lookup} offer ways to provide early components to invoker.
 */
public class ProtoLookup implements Lookup {
    private final Map<Class<?>, Object> components;

    private final Lookup lookup;

    private final TypeRegistry typeRegistry;

    @Inject
    public DefaultPackagingRegistry(Lookup lookup, TypeRegistry typeRegistry, List<PackagingProvider> providers) {
        super(providers);
        this.lookup = lookup;
        this.typeRegistry = typeRegistry;
    }

    @Override
    public Optional<Packaging> lookup(String id) {

import java.util.Optional;

import org.apache.maven.api.services.Lookup;
import org.apache.maven.api.services.LookupException;

public class SimpleLookup implements Lookup {
    private final List<Object> objects;

    public SimpleLookup(List<Object> objects) {
        this.objects = objects;
    }

    @Override
    public <T> T lookup(Class<T> type) {
        return objects.stream()

```

If you set an empty lookup bind password, the lookup bind will use the unauthenticated authentication mechanism, as described in [RFC 4513 Section 5.1.2](https://tools.ietf.org/html/rfc4513#section-5.1.2).

### User lookup

    assertThat(cacheEvents()).containsExactly(CacheMiss::class)

    result = cachedDns.lookup("google.com")
    assertThat(server.takeRequest(1, TimeUnit.MILLISECONDS)).isNull()
    assertThat(result).isEqualTo(listOf(address("157.240.1.18")))

    assertThat(cacheEvents()).containsExactly(CacheHit::class)

    result = cachedDns.lookup("www.google.com")
    assertThat(result).containsExactly(address("157.240.1.18"))

    private final Lookup lookup;

    public PlexusContainerCapsule(
            LookupContext context, ClassLoader previousClassLoader, DefaultPlexusContainer plexusContainer) {
        this.previousClassLoader = requireNonNull(previousClassLoader, "previousClassLoader");
        this.plexusContainer = requireNonNull(plexusContainer, "plexusContainer");
        this.lookup = new DefaultLookup(plexusContainer);

    private final Logger logger = LoggerFactory.getLogger(getClass());

    private final Lookup lookup;

    private final DefaultLifecycles defaultLifeCycles;

    @Inject
    public DefaultLifecyclePluginAnalyzer(Lookup lookup, DefaultLifecycles defaultLifeCycles) {
        this.lookup = requireNonNull(lookup);
        this.defaultLifeCycles = requireNonNull(defaultLifeCycles);
    }