public void testEquals_self() {
    assertTrue("An Object should be equal to itself.", collection.equals(collection));
  }

  // Comparisons to null *are* defined.
  @SuppressWarnings("UndefinedEquals")
  public void testEquals_null() {
    // noinspection ObjectEqualsNull
    assertFalse("An object should not be equal to null.", collection.equals(null));
  }

  // A collection should essentially never be equal to a non-collection.

                continue;
            }
            if (ModifierUtil.isStatic(method.getModifiers()) && method.getName().equals("valueOf") && method.getParameterTypes().length == 1
                    && method.getParameterTypes()[0].equals(String.class)) {
                valueOfMethod = method;
                break;
            }
        }
    }

                    v.getVersions().add( version );
                }
            }

            if ( "null".equals( versioning.getLastUpdated() ) )
            {
                versioning.setLastUpdated( null );
            }

            if ( "null".equals( v.getLastUpdated() ) )
            {
                v.setLastUpdated( null );
            }

      if (!endpointPair.isOrdered()) {
        return false;
      }

      Object source = endpointPair.source();
      Object target = endpointPair.target();
      return (node.equals(source) && graph.successors(node).contains(target))
          || (node.equals(target) && graph.predecessors(node).contains(source));
    } else {
      if (endpointPair.isOrdered()) {
        return false;
      }

    }

    @Override
    public boolean equals(@Nullable Object other) {
      if (!(other instanceof ParameterizedType)) {
        return false;
      }
      ParameterizedType that = (ParameterizedType) other;
      return getRawType().equals(that.getRawType())
          && Objects.equals(getOwnerType(), that.getOwnerType())
          && Arrays.equals(getActualTypeArguments(), that.getActualTypeArguments());
    }

 * additional documentation, including:
 *
 * <ul>
 *   <li><a
 *       href="https://github.com/google/guava/wiki/GraphsExplained#equals-hashcode-and-graph-equivalence">
 *       {@code equals()}, {@code hashCode()}, and graph equivalence</a>
 *   <li><a href="https://github.com/google/guava/wiki/GraphsExplained#synchronization">
 *       Synchronization policy</a>

  /** Constructor for use by subclasses. */
  protected ForwardingSet() {}

  @Override
  protected abstract Set<E> delegate();

  @Override
  public boolean equals(@Nullable Object object) {
    return object == this || delegate().equals(object);
  }

  @Override
  public int hashCode() {
    return delegate().hashCode();
  }

  /**

        assertTrue(kuromojiItem1.equals(kuromojiItem1));
        assertTrue(kuromojiItem1.equals(new KuromojiItem(1, "t1", "s1", "r1", "p1")));
        assertTrue(kuromojiItem1.equals(new KuromojiItem(2, "t1", "s1", "r1", "p1")));
        assertFalse(kuromojiItem1.equals(new KuromojiItem(1, "T1", "s1", "r1", "p1")));
        assertFalse(kuromojiItem1.equals(new KuromojiItem(1, "t1", "S1", "r1", "p1")));

    }
  }

  private interface Equals {
    @Override
    boolean equals(@Nullable Object obj);

    @Override
    int hashCode();

    @Override
    String toString();
  }

  private static class NoDelegateToEquals implements Equals {

    private static final Function<Equals, Equals> WRAPPER =
        new Function<Equals, Equals>() {
          @Override

    DcerpcBinding(final String proto, final String server) {
        this.proto = proto;
        this.server = server;
    }

    void setOption(final String key, final Object val) throws DcerpcException {
        if (key.equals("endpoint")) {
            endpoint = val.toString();
            final String lep = endpoint.toLowerCase();
            if (lep.startsWith("\\pipe\\")) {