*         project (e.g. describes the metadata of some artifact from the repository).
     */
    public Path getProjectDirectory() {
        return (pomFile != null) ? pomFile.getParent() : null;
    }

    /**
     * @return the model id as {@code groupId:artifactId:packaging:version}
     */
    public String getId()
    {
        StringBuilder id = new StringBuilder( 64 );