}

        @Override
        public Map<String, String> getUserProperties() {
            return Map.of();
        }

        @Override
        public Map<String, String> getSystemProperties() {
            return systemProperties;
        }

        @Override
        public Map<String, String> getEffectiveProperties(Project project) {

import static org.apache.maven.internal.impl.Utils.map;
import static org.apache.maven.internal.impl.Utils.nonNull;

public class DefaultSession extends AbstractSession implements InternalMavenSession {

    private final MavenSession mavenSession;
    private final MavenRepositorySystem mavenRepositorySystem;
    private final RuntimeInformation runtimeInformation;

        Map artifactMap = project.getArtifactMap();

        assertNotNull( artifactMap, "artifact-map should not be null." );
        assertEquals( 1, artifactMap.size(), "artifact-map should contain 1 element." );

        Artifact artifact = (Artifact) artifactMap.get( key );

        assertNotNull( artifact, "dependency artifact not found in map." );

        return Optional.empty();
    }

    @Override
    public <T> List<T> lookupList(Class<T> type) {
        return List.of();
    }

    @Override
    public <T> Map<String, T> lookupMap(Class<T> type) {
        return Map.of();
    }

import javax.inject.Singleton;

import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.LinkedBlockingQueue;

 * under the License.
 */
package org.apache.maven.internal.impl.standalone;

import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Map;

import org.apache.maven.api.Artifact;
import org.apache.maven.api.ArtifactCoordinate;
import org.apache.maven.api.Node;
import org.apache.maven.api.Session;
import org.apache.maven.api.services.ModelBuilder;

 * under the License.
 */
package org.apache.maven.project;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ForkJoinPool;
import java.util.concurrent.ForkJoinTask;
import java.util.concurrent.Future;

    }

    private Map<String, NamedLockFactory> namedLockFactories;

    public final Map<String, NamedLockFactory> getNamedLockFactories() {
        checkClosed();
        if (namedLockFactories == null) {
            namedLockFactories = createNamedLockFactories();
        }
        return namedLockFactories;
    }

    protected Map<String, NamedLockFactory> createNamedLockFactories() {

import java.lang.annotation.Annotation;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import com.google.inject.Key;

                internalSession.toRepositories(nonNull(recessive, "recessive")),
                processRecessive);
        return repos.stream()
                .<RemoteRepository>map(DefaultRemoteRepository::new)
                .toList();
    }

    public static org.eclipse.aether.repository.RepositoryPolicy buildRepositoryPolicy(
            org.apache.maven.api.model.RepositoryPolicy policy) {