public static <N> EndpointPair<N> ordered(N source, N target) {
    return new Ordered<>(source, target);
  }

  /** Returns an {@link EndpointPair} representing the endpoints of an undirected edge. */
  public static <N> EndpointPair<N> unordered(N nodeU, N nodeV) {
    // Swap nodes on purpose to prevent callers from relying on the "ordering" of an unordered pair.
    return new Unordered<>(nodeV, nodeU);
  }

    EndpointPair<String> ordered = EndpointPair.ordered("source", "target");
    assertThat(ordered.isOrdered()).isTrue();
    assertThat(ordered).containsExactly("source", "target").inOrder();
    assertThat(ordered.source()).isEqualTo("source");
    assertThat(ordered.target()).isEqualTo("target");
    assertThat(ordered.nodeU()).isEqualTo("source");
    assertThat(ordered.nodeV()).isEqualTo("target");

    EndpointPair<String> ordered = EndpointPair.ordered("source", "target");
    assertThat(ordered.isOrdered()).isTrue();
    assertThat(ordered).containsExactly("source", "target").inOrder();
    assertThat(ordered.source()).isEqualTo("source");
    assertThat(ordered.target()).isEqualTo("target");
    assertThat(ordered.nodeU()).isEqualTo("source");
    assertThat(ordered.nodeV()).isEqualTo("target");

    iter.remove();

    // forward map ordered by currency
    assertThat(bimap.keySet()).containsExactly(Currency.FRANC, Currency.PESO).inOrder();
    // forward map ordered by currency (even for country values)
    assertThat(bimap.values()).containsExactly(Country.SWITZERLAND, Country.CHILE).inOrder();
    // backward map ordered by country
    assertThat(bimap.inverse().keySet())

  /**
   * Adds an edge connecting {@code endpoints} (in the order, if any, specified by {@code
   * endpoints}) if one is not already present.
   *
   * <p>If this graph is directed, {@code endpoints} must be ordered and the added edge will be
   * directed; if it is undirected, the added edge will be undirected.
   *
   * <p>If this graph is directed, {@code endpoints} must be ordered.
   *

     *     be arbitrarily reordered by this method call
     * @return an unmodifiable, ordered map of results: the keys will be the specified quantile
     *     indexes, and the values the corresponding quantile values. When iterating, entries in the
     *     map are ordered by quantile index in the same order that the indexes were passed to the
     *     {@code indexes} method.
     */

    this.spliteratorSuppliers = checkNotNull(spliteratorSuppliers);
  }

  @SafeVarargs
  @CanIgnoreReturnValue
  public final Ordered expect(Object... elements) {
    return expect(asList(elements));
  }

  @CanIgnoreReturnValue
  public final Ordered expect(Iterable<?> elements) {
    List<List<E>> resultsForAllStrategies = new ArrayList<>();

    this.spliteratorSuppliers = checkNotNull(spliteratorSuppliers);
  }

  @SafeVarargs
  @CanIgnoreReturnValue
  public final Ordered expect(Object... elements) {
    return expect(asList(elements));
  }

  @CanIgnoreReturnValue
  public final Ordered expect(Iterable<?> elements) {
    List<List<E>> resultsForAllStrategies = new ArrayList<>();

  /**
   * Returns the platform preferred implementation of an insertion ordered set based on a hash
   * table.
   */
  static <E extends @Nullable Object> Set<E> newLinkedHashSetWithExpectedSize(int expectedSize) {
    return CompactLinkedHashSet.createWithExpectedSize(expectedSize);
  }

  /**
   * Returns the platform preferred map implementation that preserves insertion order when used only
   * for insertions.
   */

    }

    public int getNumberOfBuilds() {
        return projectBuilds.size();
    }

    /**
     * Gets all the builds that have no reactor-dependencies, ordered by critical path priority
     *
     * @return A list of all the initial builds, ordered by priority (critical path first)
     */
    public List<MavenProject> getRootSchedulableBuilds() {
        Set<MavenProject> result = new LinkedHashSet<>();