}

  @Override
  public Set<N> predecessors() {
    return adjacentNodes();
  }

  @Override
  public Set<N> successors() {
    return adjacentNodes();
  }

  @Override
  public Set<E> incidentEdges() {
    return Collections.unmodifiableSet(incidentEdgeMap.keySet());
  }

  @Override
  public Set<E> inEdges() {
    return incidentEdges();
  }

  @Override

    @Override
    public void execute(Runnable runnable) {
      assertThat(runnable).isInstanceOf(TrustedListenableFutureTask.class);
      runnable.run();
    }

    @Override
    public void shutdown() {}

    @Override
    public List<Runnable> shutdownNow() {
      return ImmutableList.of();
    }

    @Override
    public boolean isShutdown() {
      return false;
    }

 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *

    public Long getVersionNo() {
        return asDocMeta().version();
    }

    public void setVersionNo(final Long version) {
        asDocMeta().version(version);
    }

    public void addField(final String key, final Object value) {
        fields.put(key, value);
    }

    public String getLogMessage() {
        return getUrl();
    }

    public LocalDateTime getRequestedAt() {
        return getCreatedAt();

    public Integer sortOrder;

    /**
     * The username who created this path mapping.
     */
    @Size(max = 1000)
    public String createdBy;

    /**
     * The timestamp when this path mapping was created.
     */
    @ValidateTypeFailure
    public Long createdTime;

    /**
     * The user agent string for this path mapping.
     */
    @Size(max = 1000)
    public String userAgent;

    this.reference = reference;
  }

  @Override
  public boolean isPresent() {
    return true;
  }

  @Override
  public T get() {
    return reference;
  }

  @Override
  public T or(T defaultValue) {
    checkNotNull(defaultValue, "use Optional.orNull() instead of Optional.or(null)");
    return reference;
  }

  @Override
  public Optional<T> or(Optional<? extends T> secondChoice) {

    }

    public String getTerm() {
        checkSpecifiedProperty("term");
        return convertEmptyToNull(term);
    }

    public void setTerm(String value) {
        registerModifiedProperty("term");
        this.term = value;
    }

    public String getUpdatedBy() {
        checkSpecifiedProperty("updatedBy");
        return convertEmptyToNull(updatedBy);
    }

    @Override
    public String toString() {
      return name;
    }
  }

  public final class StringSubscriber {
    private final String name;

    public StringSubscriber(String name) {
      this.name = name;
    }

    @Subscribe
    public void handleString(String string) {
      dispatchedSubscribers.add(this);
    }

    @Override
    public String toString() {

    private int currentPageNumber;

    /** ID of the failure URL record. */
    public String id;

    /** Name of the thread that encountered the failure. */
    public String threadName;

    /** Number of errors encountered for this URL. */
    public String errorCount;

    /** Last time this URL was accessed. */
    public String lastAccessTime;

    /**
     * Clears all pager data and resets to default values.

    @Override
    @SuppressWarnings("unchecked")
    public Entry<String, Integer>[] createArray(int length) {
      return (Entry<String, Integer>[]) new Entry<?, ?>[length];
    }

    @Override
    public List<Entry<String, Integer>> order(List<Entry<String, Integer>> insertionOrder) {
      return insertionOrder;
    }
  }

  public abstract static class TestEntriesListGenerator extends TestEntriesGenerator