* doesn't. Additionally, the order in which nodes or edges are added to the graph, and the order
   * in which they are iterated over, are irrelevant.
   *
   * <p>A reference implementation of this is provided by {@link AbstractValueGraph#equals(Object)}.
   */
  @Override
  boolean equals(@CheckForNull Object object);

  /**
   * Returns the hash code for this graph. The hash code of a graph is defined as the hash code of a