protected Artifact artifact;

    protected AbstractArtifactMetadata(Artifact artifact) {
        this.artifact = artifact;
    }

    @Override
    public boolean storedInGroupDirectory() {
        return false;
    }

    @Override
    public String getGroupId() {
        return artifact.getGroupId();
    }

    @Override
    public String getArtifactId() {

    /**
     * Whether this metadata should be stored alongside the group.
     *
     * @return whether this metadata should be stored alongside the group
     */
    boolean storedInGroupDirectory();

    String getGroupId();

    String getArtifactId();

    String getBaseVersion();

    Object getKey();

    /**
     * Get the filename of this metadata on the local repository.

    public ArtifactRepositoryMetadata(Artifact artifact, Versioning versioning) {
        super(createMetadata(artifact, versioning));
        this.artifact = artifact;
    }

    @Override
    public boolean storedInGroupDirectory() {
        return false;
    }

    @Override
    public boolean storedInArtifactVersionDirectory() {
        return false;
    }

    @Override
    public String getGroupId() {

        StringBuilder path = new StringBuilder(128);

        path.append(formatAsDirectory(metadata.getGroupId())).append(PATH_SEPARATOR);
        if (!metadata.storedInGroupDirectory()) {
            path.append(metadata.getArtifactId()).append(PATH_SEPARATOR);

            if (metadata.storedInArtifactVersionDirectory()) {
                path.append(metadata.getBaseVersion()).append(PATH_SEPARATOR);