* static final ImmutableValueGraph<City, Distance> CITY_ROAD_DISTANCE_GRAPH =
   *     ValueGraphBuilder.undirected()
   *         .<City, Distance>immutable()
   *         .putEdgeValue(PARIS, BERLIN, kilometers(1060))
   *         .putEdgeValue(PARIS, BRUSSELS, kilometers(317))
   *         .putEdgeValue(BERLIN, BRUSSELS, kilometers(764))
   *         .addNode(REYKJAVIK)
   *         .build();
   * }</pre>
   *

 *
 * <p>The time complexity of all collection-returning accessors is O(1), since views are returned.
 *
 * @author James Sexton
 * @author Joshua O'Madadhain
 * @author Omar Darwish
 * @param <N> Node parameter type
 * @param <V> Value parameter type
 */
@ElementTypesAreNonnullByDefault
class StandardValueGraph<N, V> extends AbstractValueGraph<N, V> {
  private final boolean isDirected;

?e&ccabew.&resu,sr,?llarap,?lik,oof,rigetuc,?m&11tqqq--nx?41s3c--nx?ef,sioge,?n&30sql1--nx?65zqhe--nx?a&ebyllej,i&lognom,viv,??iam,n7p7qrt0--nx?o&o&las,mflah,?ruk,staw,??o&131rot--nx?7qrbk--nx?aic,c?d&iakkoh!.&a&deki?gakihset?hcebihs?k&adih?u&fib?narihs???m&ayiruk?hot?ihs&orihatik?ukuf??oras?usta??r&ib&a!ka??o?uruf??ozo?u&gakihsagih?oyot???sakim?ta&gikust?mun??w&a&ga&k&an?uf??nus!imak???k&aru?i&h&asa?sagih??kat?mak??omihs?um??zimawi??ine?oyk??yot??e&a&mustam?nan??b&a&kihs?yak??o&noroh?to???ian?k...

and four times six is thirteen, and four times seven is--oh dear!
I shall never get to twenty at that rate!  However, the
Multiplication Table doesn't signify:  let's try Geography.
London is the capital of Paris, and Paris is the capital of Rome,
and Rome--no, THAT'S all wrong, I'm certain!  I must have been
changed for Mabel!  I'll try and say "How doth the little--"'
and she crossed her hands on her lap as if she were saying lessons,

 *
 * <p>The time complexity of all collection-returning accessors is O(1), since views are returned.
 *
 * @author James Sexton
 * @author Joshua O'Madadhain
 * @author Omar Darwish
 * @param <N> Node parameter type
 * @param <E> Edge parameter type
 */
@ElementTypesAreNonnullByDefault
class StandardNetwork<N, E> extends AbstractNetwork<N, E> {
  private final boolean isDirected;

  @Override
  protected ArrayTable<String, Integer, Character> create(@Nullable Object... data) {
    // TODO: Specify different numbers of rows and columns, to detect problems
    // that arise when the wrong size is used.
    ArrayTable<String, Integer, Character> table =
        ArrayTable.create(asList("foo", "bar", "cat"), asList(1, 2, 3));
    populate(table, data);
    return table;
  }

  @Override

  @Override
  protected ArrayTable<String, Integer, Character> create(@Nullable Object... data) {
    // TODO: Specify different numbers of rows and columns, to detect problems
    // that arise when the wrong size is used.
    ArrayTable<String, Integer, Character> table =
        ArrayTable.create(asList("foo", "bar", "cat"), asList(1, 2, 3));
    populate(table, data);
    return table;
  }

  @Override

 * which is in O(d_node) where d_node is the degree of {@code node}.
 *
 * @author James Sexton
 * @author Joshua O'Madadhain
 * @author Omar Darwish
 * @param <N> Node parameter type
 * @param <V> Value parameter type
 */
@ElementTypesAreNonnullByDefault
final class StandardMutableValueGraph<N, V> extends StandardValueGraph<N, V>

 * which external/unmanaged code is executed while the lock is held. (See caveats under
 * <strong>Performance</strong>).
 *
 * <p><strong>Cycle Detection</strong>
 *
 * <p>Deadlocks can arise when locks are acquired in an order that forms a cycle. In a simple
 * example involving two locks and two threads, deadlock occurs when one thread acquires Lock A, and

     * bytecode rewriting that checks for any null value that passes through an API with a
     * known-non-null type? But that particular problem might not arise here, since we're not
     * actually reading from the fields in any case in which they might be null (as proven by the
     * requireNonNull checks below). Plus, we're *already* lying here, since newHeader passes a null