}
    // ------------------------------------------------------------------------
    public MetadataGraphVertex addVertex(ArtifactMetadata md) {
        if (md == null) {
            return null;
        }

        checkVertices();

        MetadataGraphVertex v = findVertex(md);
        if (v != null) {
            return v;
        }

        v = new MetadataGraphVertex(md);

        if (entry == null)
            return false;

        LeaseManager.LeaseEntry leaseEntry = baseLeaseManager.getLease(entry.getLeaseKey());
        return leaseEntry != null && leaseEntry.hasReadCache();
    }

    /**
     * Get cached directory listing
     *
     * @param directoryPath directory path
     * @return list of cached files or null
     */

    protected final ColumnInfo _columnSortOrder = cci("sortOrder", "sortOrder", null, null, Integer.class, "sortOrder", null, false, false,
            false, "Integer", 0, 0, null, null, false, null, null, null, null, null, false);
    protected final ColumnInfo _columnTarget = cci("target", "target", null, null, String.class, "target", null, false, false, false,

    @Test
    @DisplayName("Setters accept null and getters return null")
    void settersAcceptNull() {
        TestSpnegoToken t = new TestSpnegoToken();
        t.setMechanismToken(null);
        t.setMechanismListMIC(null);
        assertNull(t.getMechanismToken(), "mechanismToken should be null after setting null");
        assertNull(t.getMechanismListMIC(), "mechanismListMIC should be null after setting null");
    }

     * putIndex or sees null item.
     */
    private void checkNext() {
      if (nextIndex == putIndex) {
        nextIndex = -1;
        nextItem = null;
      } else {
        nextItem = items[nextIndex];
        if (nextItem == null) nextIndex = -1;
      }
    }

    @Override
    public E next() {

        return treeRoot == null ? null : new MetadataGraph(treeRoot);
    }
    // ----------------------------------------------------------------------------
    public MetadataGraph getGraph(ArtifactScopeEnum scope)
            throws MetadataResolutionException, GraphConflictResolutionException {
        if (treeRoot == null) {
            return null;
        }

        if (conflictResolver == null) {

    // Mixed case.
    checkPublicSuffix("COM", null)
    checkPublicSuffix("example.COM", "example.com")
    checkPublicSuffix("WwW.example.COM", "example.com")
    // Leading dot.
    checkPublicSuffix(".com", null)
    checkPublicSuffix(".example", null)
    checkPublicSuffix(".example.com", null)
    checkPublicSuffix(".example.example", null)
    // Unlisted TLD.
    checkPublicSuffix("example", null)

  private val routeDatabase: RouteDatabase,
  private val connectionUser: ConnectionUser,
) : RoutePlanner {
  private var routeSelection: RouteSelector.Selection? = null
  private var routeSelector: RouteSelector? = null
  private var nextRouteToTry: Route? = null

  override val deferredPlans = ArrayDeque<Plan>()

  override fun isCanceled(): Boolean = connectionUser.isCanceled()

  @Throws(IOException::class)

    protected final ColumnInfo _columnSuggestWord = cci("suggestWord", "suggestWord", null, null, String.class, "suggestWord", null, false,
            false, false, "keyword", 0, 0, null, null, false, null, null, null, null, null, false);
    protected final ColumnInfo _columnUpdatedBy = cci("updatedBy", "updatedBy", null, null, String.class, "updatedBy", null, false, false,

            0, 0, null, null, false, null, null, null, null, null, false);
    protected final ColumnInfo _columnDocId = cci("docId", "docId", null, null, String.class, "docId", null, false, false, false, "keyword",
            0, 0, null, null, false, null, null, null, null, null, false);
    protected final ColumnInfo _columnOrder = cci("order", "order", null, null, Integer.class, "order", null, false, false, false,