public void testPutAll_supportedNonePresent() {
    putAll(createDisjointCollection());
    expectAdded(e3(), e4());
  }

  @MapFeature.Require(absent = SUPPORTS_PUT)
  public void testPutAll_unsupportedNonePresent() {
    try {
      putAll(createDisjointCollection());
      fail("putAll(nonePresent) should throw");
    } catch (UnsupportedOperationException expected) {
    }
    expectUnchanged();

    private Map<String, Object> mergePropertiesWith(Map<String, Object> properties) {
        Map<String, Object> result = new HashMap<>();
        result.putAll(defaultProperties);
        result.putAll(properties);
        result.putAll(overrideProperties);
        return result;
    }

        multimap = create();
        multimap.putAll("foo", asList(2, 3));
        multimap.putAll("bar", asList(4, 5));
        multimap.putAll("foo", asList(6));
        multimap.putAll("baz", asList(7, 8));
        multimap.putAll("dog", asList(9));
        multimap.putAll("bar", asList(10, 11));
        multimap.putAll("cat", asList(12, 13, 14));
        return multimap.keySet().iterator();
      }

        Properties props = new Properties();
        props.putAll(getter.get());
        T ret = runner.perform(props);
        if (!props.equals(getter.get())) {
            setter.accept(props);
        }
        return ret;
    }

    private void writeOperationVoid(WriteOpVoid runner) {
        Properties props = new Properties();
        props.putAll(getter.get());
        runner.perform(props);

   *     ImmutableListMultimap.<Character, Character>builder()
   *         .putAll('b', Arrays.asList('a', 'n', 'a', 'n', 'a'))
   *         .putAll('a', Arrays.asList('p', 'p', 'l', 'e'))
   *         .putAll('c', Arrays.asList('a', 'r', 'r', 'o', 't'))
   *         .putAll('a', Arrays.asList('s', 'p', 'a', 'r', 'a', 'g', 'u', 's'))
   *         .putAll('c', Arrays.asList('h', 'e', 'r', 'r', 'y'))
   *         .build();
   * }

        if (value == null) {
            return this;
        }
        return snapshotter.snapshot(value);
    }

    @Override
    public void appendToHasher(Hasher hasher) {
        hasher.putNull();
    }

    @Override
    public ValueSnapshot asSnapshot() {
        return this;
    }

    @Override
    public Object isolate() {
        return null;
    }

    @Nullable

   *     ImmutableSetMultimap.<Character, Character>builder()
   *         .putAll('b', Arrays.asList('a', 'n', 'a', 'n', 'a'))
   *         .putAll('a', Arrays.asList('p', 'p', 'l', 'e'))
   *         .putAll('c', Arrays.asList('a', 'r', 'r', 'o', 't'))
   *         .putAll('a', Arrays.asList('s', 'p', 'a', 'r', 'a', 'g', 'u', 's'))
   *         .putAll('c', Arrays.asList('h', 'e', 'r', 'r', 'y'))
   *         .build();
   *

  }

  @CanIgnoreReturnValue
  @Override
  public boolean putAll(@ParametricNullness K key, Iterable<? extends V> values) {
    return delegate().putAll(key, values);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean putAll(Multimap<? extends K, ? extends V> multimap) {
    return delegate().putAll(multimap);
  }

  @CanIgnoreReturnValue
  @Override

  }

  @CanIgnoreReturnValue
  @Override
  public boolean putAll(@ParametricNullness K key, Iterable<? extends V> values) {
    return delegate().putAll(key, values);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean putAll(Multimap<? extends K, ? extends V> multimap) {
    return delegate().putAll(multimap);
  }

  @CanIgnoreReturnValue
  @Override

   *     ImmutableListMultimap.<Character, Character>builder()
   *         .putAll('b', Arrays.asList('a', 'n', 'a', 'n', 'a'))
   *         .putAll('a', Arrays.asList('p', 'p', 'l', 'e'))
   *         .putAll('c', Arrays.asList('a', 'r', 'r', 'o', 't'))
   *         .putAll('a', Arrays.asList('s', 'p', 'a', 'r', 'a', 'g', 'u', 's'))
   *         .putAll('c', Arrays.asList('h', 'e', 'r', 'r', 'y'))
   *         .build();
   * }