orderedNodeConnections,
        /* predecessorCount= */ 0,
        /* successorCount= */ 0);
  }

  static <N, V> DirectedGraphConnections<N, V> ofImmutable(
      N thisNode, Iterable<EndpointPair<N>> incidentEdges, Function<N, V> successorNodeToValueFn) {
    checkNotNull(thisNode);
    checkNotNull(successorNodeToValueFn);

    Map<N, Object> adjacentNodeValues = new HashMap<>();

    return fromArrayWithExpectedSize(array, expectedSize);
  }

  /**
   * Returns an immutable set containing each of {@code elements}, minus duplicates, in the order
   * each appears first in the source iterable. This method iterates over {@code elements} only
   * once.
   *
   * <p><b>Performance note:</b> This method will sometimes recognize that the actual copy operation

  // This function specifically returns a BiPredicate, because Guava7’s Equivalence class does not
  // actually implement BiPredicate, and CollectorTests expects a BiPredicate.
  static <C, E extends @Nullable Object, R extends Iterable<E>>
      BiPredicate<C, C> pairwiseOnResultOf(Function<C, R> arg) {
    Equivalence<C> equivalence = Equivalence.equals().<E>pairwise().onResultOf(arg);
    return equivalence::equivalent;
  }

    }
    @Nullable Object[] result = new Object[length];
    arraycopy(elements, offset, result, 0, length);
    return result;
  }

  @CanIgnoreReturnValue
  private static @Nullable Object[] fillArray(Iterable<?> elements, @Nullable Object[] array) {
    int i = 0;
    for (Object element : elements) {
      array[i++] = element;
    }
    return array;
  }

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

    @Override
    public Iterable<Entry<Country, Currency>> order(List<Entry<Country, Currency>> insertionOrder) {
      return orderEntriesByKey(insertionOrder);
    }

    @Override
    public Country[] createKeyArray(int length) {

    }
    assertMultimapRemainsUnmodified(multimap, originalEntries);

    // Test #putAll(K, Collection<V>)
    try {
      multimap.putAll(sampleKey, sampleValueAsCollection);
      fail("putAll(K, Iterable) succeeded on unmodifiable multimap");
    } catch (UnsupportedOperationException expected) {
    }
    assertMultimapRemainsUnmodified(multimap, originalEntries);

    // Test #putAll(Multimap<K, V>)

      }
    }
  }

  // utility methods

  private static Iterable<MapMaker> allWeakKeyStrengthMakers() {
    return ImmutableList.of(createMapMaker().weakKeys(), createMapMaker().weakKeys().weakValues());
  }

  private static Iterable<MapMaker> allWeakValueStrengthMakers() {
    return ImmutableList.of(

      }
    }
  }

  // utility methods

  private static Iterable<MapMaker> allWeakKeyStrengthMakers() {
    return ImmutableList.of(createMapMaker().weakKeys(), createMapMaker().weakKeys().weakValues());
  }

  private static Iterable<MapMaker> allWeakValueStrengthMakers() {
    return ImmutableList.of(

   * entries in the same order as the original iterable.
   *
   * @throws NullPointerException if any key, value, or entry is null
   * @throws IllegalArgumentException if two entries have the same key
   * @since 19.0
   */
  public static <K, V> ImmutableMap<K, V> copyOf(
      Iterable<? extends Entry<? extends K, ? extends V>> entries) {
    int initialCapacity =

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

    @Override
    public Iterable<Entry<Country, Currency>> order(List<Entry<Country, Currency>> insertionOrder) {
      return orderEntriesByKey(insertionOrder);
    }

    @Override
    public Country[] createKeyArray(int length) {