*/
    @Nonnull
    String getGroupId();

    /**
     * {@return the identifier of the artifact}
     */
    @Nonnull
    String getArtifactId();

    /**
     * Returns the classifier of the artifact.
     *
     * @return the classifier or an empty string if none, never {@code null}
     */
    @Nonnull
    String getClassifier();

    /**

    CacheLoader<String, String> computingFunction =
        new CacheLoader<String, String>() {
          @Override
          public String load(String key) throws InterruptedException {
            if (shouldWait.get()) {
              computingLatch.await();
            }
            return key;
          }
        };
    QueuingRemovalListener<String, String> listener = queuingRemovalListener();

    private static final long serialVersionUID = 1L;

    private final String url;

    private final boolean abort;

    public DataStoreCrawlingException(final String url, final String message, final Exception e) {
        this(url, message, e, false);
    }

    public DataStoreCrawlingException(final String url, final String message, final Exception e, final boolean abort) {
        super(message, e);

        /**
         *
         */
        public String str;

        /**
         * @return String
         */
        public String getAaa() {
            return null;
        }

        /**
         * @param a
         * @return String
         */
        public String getBbb(final Object a) {
            return null;
        }

        /**
         * @return boolean

    /** The application type for FESs, e.g. used by access context. */
    protected static final String APP_TYPE = "FES"; // #change_it_first

    /** The user type for Admin, e.g. used by access context. */
    protected static final String USER_TYPE = "A";

    // ===================================================================================

class DefaultConsumerPomArtifactTransformer implements ConsumerPomArtifactTransformer {

    private static final String CONSUMER_POM_CLASSIFIER = "consumer";

    private static final String BUILD_POM_CLASSIFIER = "build";

    private static final String NAMESPACE_FORMAT = "http://maven.apache.org/POM/%s";

    private static final String SCHEMA_LOCATION_FORMAT = "https://maven.apache.org/xsd/maven-%s.xsd";

    @Override
    protected void setUp() throws Exception {
        super.setUp();

        final Map<String, String> featureMap = newHashMap();
        featureMap.put("http://xml.org/sax/features/namespaces", "false");
        final Map<String, String> propertyMap = newHashMap();
        final Map<String, String> childUrlRuleMap = newHashMap();
        childUrlRuleMap.put("//A", "href");
        childUrlRuleMap.put("//AREA", "href");

     *
     * @return the classifier or an empty string if none, never {@code null}
     * @see ArtifactCoordinates#getClassifier()
     */
    @Nonnull
    String getClassifier();

    /**
     * Returns the file extension of the artifact.
     * The dot separator is not included in the returned string.
     *
     * @return the file extension or an empty string if none, never {@code null}

    /**
     * GETs the source URI content as string. The source MUST BE relative from the {@link RemoteRepository#getUrl()}
     * root.
     *
     * @return the string if operation succeeded, {@code null} if source does not exist.
     * @throws RuntimeException If failed (and not due source not exists).
     */
    @Nonnull
    Optional<String> getString(@Nonnull URI relativeSource, @Nonnull Charset charset);

    /**

        }

        return path.toString();
    }

    public String pathOfLocalRepositoryMetadata(ArtifactMetadata metadata, ArtifactRepository repository) {
        return pathOfRepositoryMetadata(metadata.getLocalFilename(repository));
    }

    private String pathOfRepositoryMetadata(String filename) {
        StringBuilder path = new StringBuilder(128);

        path.append(filename);