* an edge connecting them.
   */
  private static final class Directed<N> extends EndpointPairIterator<N> {
    private Directed(BaseGraph<N> graph) {
      super(graph);
    }

    @Override
    protected @Nullable EndpointPair<N> computeNext() {
      while (true) {
        if (successorIterator.hasNext()) {

      return multiset;
    }

    @Override
    public Iterator<E> iterator() {
      return Multisets.elementIterator(multiset().entrySet().iterator());
    }

    @Override
    public Comparator<? super E> comparator() {
      return multiset().comparator();
    }

    @Override
    public SortedSet<E> subSet(@ParametricNullness E fromElement, @ParametricNullness E toElement) {

    return delegate.ceilingKey(checkValid(key));
  }

  @Override
  public void clear() {
    delegate.clear();
  }

  @Override
  public Comparator<? super K> comparator() {
    Comparator<? super K> comparator = delegate.comparator();
    if (comparator != null) {
      return comparator;
    }
    return NATURAL_ORDER;
  }

  @Override
  public boolean containsKey(Object key) {

    return new ListenableFutureTask<>(runnable, result);
  }

  ListenableFutureTask(Callable<V> callable) {
    super(callable);
  }

  ListenableFutureTask(Runnable runnable, @ParametricNullness V result) {
    super(runnable, result);
  }

  @Override
  public void addListener(Runnable listener, Executor exec) {
    executionList.add(listener, exec);
  }

    return delegate.ceilingKey(checkValid(key));
  }

  @Override
  public void clear() {
    delegate.clear();
  }

  @Override
  public Comparator<? super K> comparator() {
    Comparator<? super K> comparator = delegate.comparator();
    if (comparator != null) {
      return comparator;
    }
    return NATURAL_ORDER;
  }

  @Override
  public boolean containsKey(Object key) {

    // Input parameters for WitnessUnregister
    private byte[] contextHandle;

    /**
     * Creates a new WitnessUnregister RPC message.
     */
    public WitnessUnregisterMessage() {
        super(WITNESS_UNREGISTER);
        this.contextHandle = new byte[20]; // Standard DCE/RPC context handle size
    }

    /**
     * Creates a new WitnessUnregister RPC message with the specified context handle.
     *

       * of Cut.compareTo checks for belowAll before reading accessing `endpoint` on another Cut
       * instance.
       */
      super("");
    }

    @Override
    Comparable<?> endpoint() {
      throw new IllegalStateException("range unbounded on this side");
    }

    @Override
    boolean isLessThan(Comparable<?> value) {

     *
     * @param message the detail message. The detail message is saved for
     *                later retrieval by the {@link #getMessage()} method.
     */
    public InterpolatorException(String message) {
        super(message);
    }

    /**
     * Constructs a new InterpolatorException with the specified detail message and cause.
     *
     * <p>Note that the detail message associated with {@code cause} is <i>not</i>

    //
    // p4 inherits from p3
    // p3 inherits from p2
    // p2 inherits from p1
    // p1 inherits from p0
    // p0 inherits from super model
    //
    // or we can show it graphically as:
    //
    // p4 ---> p3 ---> p2 ---> p1 ---> p0 --> super model
    //
    // ----------------------------------------------------------------------

    @Test
    void testProjectInheritance() throws Exception {

import com.fasterxml.jackson.databind.node.TextNode;

public class ReplaceIsTrue extends ReplaceTextual {
    public ReplaceIsTrue(String valueToBeReplaced, TextNode replacementNode) {
        super("is_true", valueToBeReplaced, replacementNode);
    }