println("metadataDeployed", event.getMetadata() + " to " + event.getRepository());
    }

    @Override
    public void metadataDeploying(RepositoryEvent event) {
        println("metadataDeploying", event.getMetadata() + " to " + event.getRepository());
    }

    @Override
    public void metadataInstalled(RepositoryEvent event) {
        println("metadataInstalled", event.getMetadata() + " to " + event.getFile());
    }

        addPluginMapping(goalPrefix, artifactId, artifactId);
    }

    public void addPluginMapping(String goalPrefix, String artifactId, String name) {
        List<Plugin> plugins = getMetadata().getPlugins();
        boolean found = false;
        for (Iterator<Plugin> i = plugins.iterator(); i.hasNext() && !found; ) {
            Plugin plugin = i.next();
            if (plugin.getPrefix().equals(goalPrefix)) {

    public void metadataInvalid(RepositoryEvent event) {
        Exception exception = event.getException();

        Object metadata;
        if (event.getMetadata().getFile() != null) {
            metadata = event.getMetadata().getFile();
        } else {
            metadata = event.getMetadata();
        }

        String errorType = " is invalid";
        if (exception instanceof FileNotFoundException) {

                    if (!remoteFile.exists()) {
                        download.setException(new MetadataNotFoundException(download.getMetadata(), repository));
                    } else {
                        download.setException(new MetadataTransferException(download.getMetadata(), repository, e));
                    }
                }
            }
        }
    }

    private String path(Artifact artifact) {

        String metaData = "{\"key\":\"value\"}";
        queue.setMetaData(metaData);
        assertEquals(metaData, queue.getMetaData());

        queue.setMetaData(null);
        assertNull(queue.getMetaData());
    }

    public void test_encodingGetterSetter() {
        // Test encoding getter/setter
        UrlQueueImpl<Long> queue = new UrlQueueImpl<>();

        return versioning;
    }

    @Override
    public void setMetadata(Metadata metadata) {
        this.metadata = metadata;
    }

    @Override
    public Metadata getMetadata() {
        return metadata;
    }

    @Override
    public void merge(org.apache.maven.repository.legacy.metadata.ArtifactMetadata metadata) {

    private final Date timestamp;

    VersionsMetadataGenerator(RepositorySystemSession session, InstallRequest request) {
        this(session, request.getMetadata());
    }

    VersionsMetadataGenerator(RepositorySystemSession session, DeployRequest request) {
        this(session, request.getMetadata());
    }

    private VersionsMetadataGenerator(RepositorySystemSession session, Collection<? extends Metadata> metadatas) {

            if (repoMetadata.isSnapshot() && (previousMetadata != null)) {
                previousMetadata.put(remoteRepository, metadata);
            }

            if (repoMetadata.getMetadata() != null) {
                setRepository = repoMetadata.getMetadata().merge(metadata);
            } else {
                repoMetadata.setMetadata(metadata);
                setRepository = true;
            }
        }

            }

            RepositoryMetadata metadata = new SnapshotArtifactRepositoryMetadata(artifact, snapshot);

            artifact.setResolvedVersion(
                    constructVersion(metadata.getMetadata().getVersioning(), artifact.getBaseVersion()));

            artifact.addMetadata(metadata);
        }
    }

    public String getDeploymentTimestamp() {
        if (deploymentTimestamp == null) {

    private final Date timestamp;

    PluginsMetadataGenerator(RepositorySystemSession session, InstallRequest request) {
        this(session, request.getMetadata());
    }

    PluginsMetadataGenerator(RepositorySystemSession session, DeployRequest request) {
        this(session, request.getMetadata());
    }

    private PluginsMetadataGenerator(RepositorySystemSession session, Collection<? extends Metadata> metadatas) {