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 org.apache.maven.artifact.repository.ArtifactRepositoryPolicy;

/**
 * DefaultMavenMetadataCache
 */
@Named
@Singleton

    public ResolutionGroup(
            Artifact pomArtifact, Set<Artifact> artifacts, List<ArtifactRepository> resolutionRepositories) {
        this(pomArtifact, null, artifacts, null, resolutionRepositories);
    }

    public ResolutionGroup(
            Artifact pomArtifact,
            Artifact relocatedArtifact,
            Set<Artifact> artifacts,
            Map<String, Artifact> managedVersions,

import java.util.Map;
import java.util.Set;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.metadata.ArtifactMetadataSource;
import org.apache.maven.artifact.metadata.ResolutionGroup;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.resolver.ArtifactResolutionException;
import org.apache.maven.artifact.resolver.ArtifactResolutionRequest;

                artifact.getType(),
                artifact.getClassifier(),
                remoteRepositories,
                artifact.getDependencyTrail(),
                t);
        this.artifact = artifact;
    }

    public Artifact getArtifact() {
        return artifact;
    }

    public String getGroupId() {
        return groupId;
    }

     * Returns a filter for only the core artifacts.
     *
     * @return the artifact filter
     */
    ArtifactFilter getCoreArtifactFilter();

    /**
     * Exclude an extension artifact (doesn't affect getArtifactFilter's result, only getExtensionArtifactFilter).
     *
     * @param artifactId an artifact id
     * @deprecated use {@code META-INF/maven/extension.xml} to define artifacts exported by Maven core and plugin

    public ResolutionGroup(
            Artifact pomArtifact, Set<Artifact> artifacts, List<ArtifactRepository> resolutionRepositories) {
        super(pomArtifact, artifacts, resolutionRepositories);
    }

    public ResolutionGroup(
            Artifact pomArtifact,
            Artifact relocatedArtifact,
            Set<Artifact> artifacts,
            Map<String, Artifact> managedVersions,

        }
    }

    File getTouchfile(Artifact artifact) {
        StringBuilder sb = new StringBuilder(128);
        sb.append(artifact.getArtifactId());
        sb.append('-').append(artifact.getBaseVersion());
        if (artifact.getClassifier() != null) {
            sb.append('-').append(artifact.getClassifier());
        }
        sb.append('.').append(artifact.getType()).append(LAST_UPDATE_TAG);

    /**
     * Retrieves the file system path associated with a specific artifact.
     *
     * @param artifact The {@link Artifact} whose path is to be retrieved.
     * @return The {@link Path} to the artifact, or {@code null} if unavailable.
     */
    @Nullable
    Path getPath(@Nonnull Artifact artifact);

    /**
     * Returns a mapping of artifact coordinates to their corresponding resolution results.
     *

import java.io.File;
import java.util.List;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.InvalidRepositoryException;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.repository.ArtifactRepositoryPolicy;
import org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout;
import org.apache.maven.artifact.resolver.ArtifactResolutionRequest;

        org.eclipse.aether.artifact.Artifact mainArtifact = RepositoryUtils.toArtifact(artifact);
        mainArtifact = mainArtifact.setFile(source);
        request.addArtifact(mainArtifact);

        for (ArtifactMetadata metadata : artifact.getMetadataList()) {
            if (metadata instanceof ProjectArtifactMetadata projectArtifactMetadata) {