@Inject
    private LegacySupport legacySupport;

    private final Executor executor;

    public DefaultArtifactResolver() {
        int threads = Integer.getInteger("maven.artifact.threads", 5);
        if (threads <= 1) {
            executor = Runnable::run;
        } else {
            executor = new ThreadPoolExecutor(

   * The [exchange] field is assigned to null when its streams end, which may be before or after the
   * network interceptors return.
   */
  internal var interceptorScopedExchange: Exchange? = null
    private set

  // These properties are guarded by `this`. They are typically only accessed by the thread executing

    }

    private boolean isMissingPom(Exception e) {
        if (e.getCause() instanceof MultipleArtifactsNotFoundException) {
            return true;
        }
        return e.getCause() instanceof org.eclipse.aether.resolution.ArtifactResolutionException
                && e.getCause().getCause() instanceof ArtifactNotFoundException;
    }

    private boolean isNonTransferablePom(Exception e) {

  public final Throwable failureCause() {
    return snapshot.failureCause();
  }

  /**
   * @since 13.0
   */
  @Override
  public final void addListener(Listener listener, Executor executor) {
    listeners.addListener(listener, executor);
  }

  @Override
  public String toString() {
    return getClass().getSimpleName() + " [" + state() + "]";
  }

  /**

    protected boolean favoriteSupport;

    /** Flag indicating whether thumbnail generation is enabled. */
    protected boolean thumbnailSupport;

    /**
     * Hook method called before action execution. Sets up search-related flags and
     * registers popular words if enabled.
     *
     * @param runtime the action runtime context
     * @return the action response, or null to continue with normal processing
     */

    /** The key of the message: Crawler Execution Time */
    public static final String LABELS_crawling_info_CrawlerExecTime = "{labels.crawling_info_CrawlerExecTime}";

    /** The key of the message: Crawler Status */
    public static final String LABELS_crawling_info_CrawlerStatus = "{labels.crawling_info_CrawlerStatus}";

    /** The key of the message: Crawl Execution Time (Web/File) */

    private static void addPhases(
            Graph graph, Graph.Vertex before, Graph.Vertex after, Collection<Lifecycle.Phase> phases) {
        // We add ordering between internal phases.
        // This would be wrong at execution time, but we are here computing a list and not a graph,
        // so in order to obtain the expected order, we add these links between phases.
        Lifecycle.Phase prev = null;
        for (Lifecycle.Phase child : phases) {

                    if (executionId != null) {
                        for (PluginExecution execution : plugin.getExecutions()) {
                            if (executionId.equals(execution.getId())) {
                                // NOTE: The PluginConfigurationExpander already merged the plugin-level config in
                                dom = (Xpp3Dom) execution.getConfiguration();

    }

    /**
     * Sets the interval time between crawling executions.
     *
     * @param crawlingExecutionInterval The crawling execution interval in milliseconds
     */
    public void setCrawlingExecutionInterval(final long crawlingExecutionInterval) {
        this.crawlingExecutionInterval = crawlingExecutionInterval;
    }

    /**

// to this graph.

// --------------------------------------------------------------------------
// API for driving Graph execution.

typedef struct TF_Session TF_Session;

// Return a new execution session with the associated graph, or NULL on
// error. Does not take ownership of any input parameters.
//