return delegate().adjacentNodes(node);
  }

  @Override
  public Set<N> predecessors(N node) {
    return delegate().predecessors(node);
  }

  @Override
  public Set<N> successors(N node) {
    return delegate().successors(node);
  }

  @Override
  public Set<EndpointPair<N>> incidentEdges(N node) {
    return delegate().incidentEdges(node);
  }

  @Override
  public int degree(N node) {

      }

      @Override
      public Set<N> predecessors(N node) {
        return AbstractNetwork.this.predecessors(node);
      }

      @Override
      public Set<N> successors(N node) {
        return AbstractNetwork.this.successors(node);
      }

      // DO NOT override the AbstractGraph *degree() implementations.
    };
  }

  @Override
  public int degree(N node) {
    if (isDirected()) {

success.upload_kuromoji_file = Plik Kuromoji przesłano.
success.upload_elevate_word = Plik słów podniesionych przesłano.
success.upload_bad_word = Plik słów zakazanych przesłano.
success.upload_mapping_file = Plik mapowania przesłano.
success.send_testmail=Wysłano e-mail testowy.
success.job_log_delete_all=Dzienniki zadań usunięto.
success.changed_password=Hasło zmieniono.
success.started_data_update=Rozpoczęto proces aktualizacji danych.

success.failure_url_delete_all = URL gagal telah dihapus.
success.delete_file = Berkas {0} telah dihapus.
success.job_started = Job telah dimulai: {0}.
success.job_stopped = Job telah dihentikan: {0}.
success.upload_synonym_file = Berkas sinonim telah diunggah.
success.upload_protwords_file = Berkas protwords telah diunggah.
success.upload_stopwords_file = Berkas stopwords telah diunggah.

success.reindex_started=Reindexação iniciada.
success.bulk_process_started=Processo em massa iniciado.
success.print_thread_dump=Despejo de threads impresso no arquivo de log.
success.install_plugin=Instalando o plugin {0}.
success.delete_plugin=Excluindo o plugin {0}.
success.upload_file_to_storage={0} carregado.
success.sso_logout=Sessão encerrada.
success.update_storage_tags=Tags para {0} atualizadas.

success.failure_url_delete_all = Deleted failure URLs.
success.delete_file = Deleted {0} file.
success.job_started = Started a job: {0}.
success.job_stopped = Stopped a job: {0}.
success.upload_synonym_file = Uploaded a synonym file.
success.upload_protwords_file = Uploaded a protwords file.
success.upload_stopwords_file = Uploaded a stopwords file.
success.upload_stemmeroverride_file = Uploaded a stemmer override file.

success.failure_url_delete_all = Deleted failure URLs.
success.delete_file = Deleted {0} file.
success.job_started = Started a job: {0}.
success.job_stopped = Stopped a job: {0}.
success.upload_synonym_file = Uploaded a synonym file.
success.upload_protwords_file = Uploaded a protwords file.
success.upload_stopwords_file = Uploaded a stopwords file.
success.upload_stemmeroverride_file = Uploaded a stemmer override file.

    } else {
      return ImmutableSet.of();
    }
  }

  /**
   * Returns the successors of the given node, or an empty set if this set does not represent
   * outgoing edges.
   */
  private Set<N> successorsOrEmpty(N node) {
    if (edgeType == EdgeType.OUTGOING || edgeType == EdgeType.BOTH) {
      return graph.successors(node);
    } else {
      return ImmutableSet.of();
    }
  }

  @Override
  public Set<N> predecessors(N node) {
    return nodeInvalidatableSet(checkedConnections(node).predecessors(), node);
  }

  @Override
  public Set<N> successors(N node) {
    return nodeInvalidatableSet(checkedConnections(node).successors(), node);
  }

  @Override
  public Set<EndpointPair<N>> incidentEdges(N node) {
    GraphConnections<N, V> connections = checkedConnections(node);

      }

      @Override
      public Set<N> predecessors(N node) {
        return AbstractValueGraph.this.predecessors(node);
      }

      @Override
      public Set<N> successors(N node) {
        return AbstractValueGraph.this.successors(node);
      }

      @Override
      public int degree(N node) {
        return AbstractValueGraph.this.degree(node);
      }

      @Override