multimap.put("bar", 1);
    multimap.putAll("foo", asList(-1, 2, 4));
    multimap.putAll("bar", asList(2, 3));
    multimap.put("foo", 1);
    assertEquals("{foo=[3, -1, 2, 4, 1], bar=[1, 2, 3]}", multimap.toString());
  }

  public void testOrderingReadOnly() {
    Multimap<String, Integer> multimap = initializeMultimap5();
    assertOrderingReadOnly(multimap);
  }

  public void testOrderingUnmodifiable() {

     *
     * @param result The interim result, may be {@code null}.
     */
    public ModelBuilderException(ModelBuilderResult result) {
        super(result.toString());
        this.result = result;
    }

    /**
     * Gets the interim result of the model building up to the point where it failed.
     *

        }

        final ArtifactStatus that = (ArtifactStatus) o;

        return rank == that.rank;
    }

    public int hashCode() {
        return rank;
    }

    public String toString() {
        return key;
    }

    public int compareTo(ArtifactStatus s) {
        return rank - s.rank;
    }

                if (detailed) {
                    msg += ". Path to offending node from root:\n";
                    msg += stepData.getPath().stream()
                            .map(n -> " -> " + n.toString())
                            .collect(Collectors.joining("\n"));
                    msg += "\n => " + stepData.getNode();
                }
                return msg;

        sb.append(dm).append(sessionId);
        if (sb.length() > dm.length()) {
            sb.delete(0, dm.length());
        }
        sb.insert(0, "{").append("}");
        return sb.toString();
    }

    // ===================================================================================
    //                                                                            Accessor

  internal fun initQueue(queue: TaskQueue) {
    if (this.queue === queue) return

    check(this.queue === null) { "task is in multiple queues" }
    this.queue = queue
  }

  override fun toString(): String = name

    return NaturalOrdering.INSTANCE.min(iterable);
  }

  // preserving singleton-ness gives equals()/hashCode() for free
  private Object readResolve() {
    return INSTANCE;
  }

  @Override
  public String toString() {
    return "Ordering.natural().reverse()";
  }

  private ReverseNaturalOrdering() {}

  private static final long serialVersionUID = 0;

    Multiset<MultisetHolder> copy = SerializableTester.reserialize(multiset);
    assertEquals(2, copy.size());
    assertSame(copy, copy.iterator().next().member);
  }

  /*
   * The behavior of toString() and iteration is tested by LinkedHashMultiset,
   * which shares a lot of code with HashMultiset and has deterministic
   * iteration order.
   */

    public int hashCode() {
      return hash;
    }

    @Override
    public int compareTo(Element that) {
      return Integer.compare(hash, that.hash);
    }

    @Override
    public String toString() {
      return String.valueOf(hash);
    }
  }

  static class SlowElement extends Element {
    SlowElement(int hash) {
      super(hash);
    }

    @Override

     * 2番目の値を設定します。
     *
     * @param second
     *            2番目の値
     */
    public void setSecond(final T2 second) {
        this.second = second;
    }

    @Override
    public String toString() {
        return "{" + first + ", " + second + "}";
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;