|| metadata instanceof ArtifactRepositoryMetadata) {
                // eaten, handled by repo system
            } else {
                request.addMetadata(new MetadataBridge(metadata));
            }
        }

        try {
            repoSystem.install(session, request);
        } catch (InstallationException e) {

        ArtifactMetadata metadata = createMetadata(artifact);

        artifact.addMetadata(metadata);
    }

    public void transformForDeployment(
            Artifact artifact, ArtifactRepository remoteRepository, ArtifactRepository localRepository) {
        ArtifactMetadata metadata = createMetadata(artifact);

        artifact.addMetadata(metadata);
    }

    private ArtifactMetadata createMetadata(Artifact artifact) {

            Snapshot snapshot = new Snapshot();
            snapshot.setLocalCopy(true);
            RepositoryMetadata metadata = new SnapshotArtifactRepositoryMetadata(artifact, snapshot);

            artifact.addMetadata(metadata);
        }
    }

    public void transformForDeployment(
            Artifact artifact, ArtifactRepository remoteRepository, ArtifactRepository localRepository)

        String snapshotKey = null;
        if (artifact.isSnapshot()) {
            snapshotKey = versionKey + ':' + artifact.getBaseVersion();
            request.addMetadata(relatedMetadata.get(snapshotKey));
        }
        request.addMetadata(relatedMetadata.get(versionKey));

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

        // replaces?
        AbstractRepositoryMetadata repoMetadata = (AbstractRepositoryMetadata) metadata;
        this.metadata.merge(repoMetadata.getMetadata());
    }

    public void merge(ArtifactMetadata metadata) {
        // TODO not sure that it should assume this, maybe the calls to addMetadata should pre-merge, then artifact

    /** {@inheritDoc} */
    public String getDependencyConflictId() {
        return artifact.getDependencyConflictId();
    }

    /** {@inheritDoc} */
    public void addMetadata(ArtifactMetadata metadata) {
        artifact.addMetadata(metadata);
    }

    /** {@inheritDoc} */
    public Collection<ArtifactMetadata> getMetadataList() {
        return artifact.getMetadataList();
    }

    void setFile(File destination);

    String getBaseVersion();

    void setBaseVersion(String baseVersion);

    String getId();

    String getDependencyConflictId();

    void addMetadata(ArtifactMetadata metadata);

    Collection<ArtifactMetadata> getMetadataList();

    void setRepository(ArtifactRepository remoteRepository);

    ArtifactRepository getRepository();

        } else {
            metadata = new SnapshotArtifactRepositoryMetadata(artifact);
        }

        repositoryMetadataManager.resolve(metadata, request);

        artifact.addMetadata(metadata);

        Metadata repoMetadata = metadata.getMetadata();
        String version = null;
        if (repoMetadata != null && repoMetadata.getVersioning() != null) {

                + " It is derived from the main artifact.");
    }

    public boolean isSnapshot() {
        return parent.isSnapshot();
    }

    public void addMetadata(ArtifactMetadata metadata) {
        // ignore. The parent artifact will handle metadata.
        // we must fail silently here to avoid problems with the artifact transformers.
    }

        sb.append(getType());
        if (hasClassifier()) {
            sb.append(':');
            sb.append(getClassifier());
        }
    }

    @Override
    public void addMetadata(ArtifactMetadata metadata) {
        if (metadataMap == null) {
            metadataMap = new HashMap<>();
        }

        ArtifactMetadata m = metadataMap.get(metadata.getKey());
        if (m != null) {