```

#### 2.2 Implementation Tasks
- [ ] Implement persistent/durable handle contexts
- [ ] Add handle GUID generation and tracking
- [ ] Implement handle state serialization
- [ ] Create reconnection logic with handle replay
- [ ] Add timeout management for durable handles
- [ ] Implement handle lease association
- [ ] Add persistent handle capability negotiation
- [ ] Create handle cache for reconnection

  public void testAdd_supportedNotPresent() {
    assertTrue("add(notPresent) should return true", collection.add(e3()));
    expectAdded(e3());
  }

  @CollectionFeature.Require(absent = SUPPORTS_ADD)
  public void testAdd_unsupportedNotPresent() {
    assertThrows(UnsupportedOperationException.class, () -> collection.add(e3()));
    expectUnchanged();
    expectMissing(e3());
  }

  public void testAdd_supportedNotPresent() {
    assertTrue("add(notPresent) should return true", collection.add(e3()));
    expectAdded(e3());
  }

  @CollectionFeature.Require(absent = SUPPORTS_ADD)
  public void testAdd_unsupportedNotPresent() {
    assertThrows(UnsupportedOperationException.class, () -> collection.add(e3()));
    expectUnchanged();
    expectMissing(e3());
  }

        .add(new Striped.LargeLazyStriped<Lock>(50, LOCK_SUPPLER))
        .add(new Striped.LargeLazyStriped<Lock>(64, LOCK_SUPPLER))
        .add(new Striped.SmallLazyStriped<Semaphore>(50, SEMAPHORE_SUPPLER))
        .add(new Striped.SmallLazyStriped<Semaphore>(64, SEMAPHORE_SUPPLER))
        .add(new Striped.LargeLazyStriped<Semaphore>(50, SEMAPHORE_SUPPLER))

        .add(new Striped.LargeLazyStriped<Lock>(50, LOCK_SUPPLER))
        .add(new Striped.LargeLazyStriped<Lock>(64, LOCK_SUPPLER))
        .add(new Striped.SmallLazyStriped<Semaphore>(50, SEMAPHORE_SUPPLER))
        .add(new Striped.SmallLazyStriped<Semaphore>(64, SEMAPHORE_SUPPLER))
        .add(new Striped.LargeLazyStriped<Semaphore>(50, SEMAPHORE_SUPPLER))

        this.activations.add(new ProjectActivationSettings(selector, ActivationSettings.activated()));
    }

    /**
     * Mark a project as optional and activated.
     * @param selector The selector of the project.
     */
    public void activateOptionalProject(String selector) {
        this.activations.add(new ProjectActivationSettings(selector, ActivationSettings.activatedOpt()));

    protected List<ColumnInfo> ccil() {
        List<ColumnInfo> ls = newArrayList();
        ls.add(columnContent());
        ls.add(columnCreatedBy());
        ls.add(columnCreatedTime());
        ls.add(columnSortOrder());
        ls.add(columnTerm());
        ls.add(columnUpdatedBy());
        ls.add(columnUpdatedTime());
        ls.add(columnVirtualHost());
        return ls;
    }

        ls.add(columnIntervalTime());
        ls.add(columnMaxAccessCount());
        ls.add(columnName());
        ls.add(columnNumOfThread());
        ls.add(columnPaths());
        ls.add(columnPermissions());
        ls.add(columnSortOrder());
        ls.add(columnTimeToLive());
        ls.add(columnUpdatedBy());
        ls.add(columnUpdatedTime());
        ls.add(columnVirtualHosts());
        return ls;
    }

        List<ColumnInfo> ls = newArrayList();
        ls.add(columnAvailable());
        ls.add(columnCrawler());
        ls.add(columnCreatedBy());
        ls.add(columnCreatedTime());
        ls.add(columnCronExpression());
        ls.add(columnJobLogging());
        ls.add(columnName());
        ls.add(columnScriptData());
        ls.add(columnScriptType());
        ls.add(columnSortOrder());
        ls.add(columnTarget());

   * @since 6.0 (source-compatible since 2.0)
   */
  public static <E> ImmutableMultiset<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E... others) {
    return new Builder<E>().add(e1).add(e2).add(e3).add(e4).add(e5).add(e6).add(others).build();
  }

  /**
   * Returns an immutable multiset containing the given elements, in the "grouped iteration order"
   * described in the class documentation.
   *