map.put("id", UPLOAD);
            map.put("name", "");
            map.put("version", "");
            result.add(map);
            try {
                result.addAll(getAllAvailableArtifacts());
            } catch (final Exception e) {
                saveError(messages -> messages.addErrorsFailedToFindPlugins(GLOBAL));
                logger.warn("Failed to access a plugin repository.", e);

      assertThrows(UnsupportedOperationException.class, () -> cache.asMap().keySet().add(1));

      assertThrows(
          UnsupportedOperationException.class, () -> cache.asMap().keySet().addAll(asList(1, 2)));
    }
  }


  public void testKeySet_clear() {
    for (LoadingCache<Object, Object> cache : caches()) {
      warmUp(cache, 0, 100);

      Set<Object> keys = cache.asMap().keySet();

    siblingCollection.add(sampleElement);

    Collection<E> copy = new ArrayList<>();
    // Avoid copy.addAll(collection), which runs afoul of an Android bug in older versions:
    // http://b.android.com/72073 http://r.android.com/98929
    Iterators.addAll(copy, collection.iterator());

    try {
      collection.add(sampleElement);
      fail("add succeeded on unmodifiable collection");

      contents[size++] = element;
      return this;
    }

    @CanIgnoreReturnValue
    @Override
    public Builder<E> add(E... elements) {
      addAll(elements, elements.length);
      return this;
    }

    final void addAll(@Nullable Object[] elements, int n) {
      checkElementsNotNull(elements, n);
      getReadyToExpandTo(size + n);
      /*

      E e1, E e2, E e3, E e4, E e5, E e6, E... remaining) {
    int size = remaining.length + 6;
    List<E> all = Lists.newArrayListWithCapacity(size);
    Collections.addAll(all, e1, e2, e3, e4, e5, e6);
    Collections.addAll(all, remaining);
    return copyOf(Ordering.natural(), all);
  }

  /**
   * Returns an immutable sorted multiset containing the given elements sorted by their natural
   * ordering.

  private static final ImmutableSet<String> PS_NOT_RS =
      ImmutableSet.of("blogspot.com", "blogspot.co.uk", "uk.com");

  private static final ImmutableSet<String> PS =
      ImmutableSet.<String>builder().addAll(RS).addAll(PS_NOT_RS).build();

  private static final ImmutableSet<String> NO_PS =
      ImmutableSet.of("www", "foo.ihopethiswillneverbeapublicsuffix", "x.y.z");

  /**

     */
    @CanIgnoreReturnValue
    @Override
    public Builder<E> addAll(Iterator<? extends E> elements) {
      super.addAll(elements);
      return this;
    }

    @CanIgnoreReturnValue
    Builder<E> combine(Builder<E> other) {
      addAll(other.contents, other.size);
      return this;
    }

    /**

        }
        builder.addAll(list);
      }
    },
    ADD_ITERABLE {
      @Override
      void doIt(ImmutableIntArray.Builder builder, AtomicInteger counter) {
        List<Integer> list = new ArrayList<>();
        int num = RANDOM.nextInt(10);
        for (int i = 0; i < num; i++) {
          list.add(counter.getAndIncrement());
        }
        builder.addAll(iterable(list));
      }
    },

   *
   * <p>This is equivalent to calling {@link #add} on each of the ranges in {@code other} in turn.
   *
   * @throws UnsupportedOperationException if this range set does not support the {@code addAll}
   *     operation
   */
  void addAll(RangeSet<C> other);

  /**
   * Adds all of the specified ranges to this range set (optional operation). After this operation,

                  @Override
                  protected Multiset<String> create(String[] elements) {
                    Multiset<String> ms = new NoRemoveMultiset<>();
                    Collections.addAll(ms, elements);
                    return ms;
                  }
                })
            .named("NoRemoveMultiset")
            .withFeatures(
                CollectionSize.ANY,