assertEqualInOrder(values, multimap().get(key));

    if (!values.isEmpty()) {
      assertEqualInOrder(values, multimap().asMap().get(key));
      assertFalse(multimap().isEmpty());
    } else {
      assertNull(multimap().asMap().get(key));
    }

    assertEquals(values.size(), multimap().get(key).size());
    assertEquals(values.size() > 0, multimap().containsKey(key));

    for (int i = 0; i < 3; i++) {
      resetContainer(mapEntry(k0(), v0()), mapEntry(k0(), v1()), mapEntry(k0(), v0()));
      List<V> expectedValues = copyToList(values);

      List<V> asMapValue = (List<V>) multimap().asMap().get(k0());
      asMapValue.remove(i);
      expectedValues.remove(i);

      assertGet(k0(), expectedValues);
    }
  }

  @MapFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(SEVERAL)

      assertTrue(multimap.containsEntry(entry.getKey(), entry.getValue()));
      size++;
    }
    assertEquals(expectedSize, size);

    int size2 = 0;
    for (Entry<K, Collection<V>> entry2 : multimap.asMap().entrySet()) {
      size2 += entry2.getValue().size();
    }
    assertEquals(expectedSize, size2);
  }

  @CollectionSize.Require(ZERO)
  public void testIsEmptyYes() {
    assertTrue(multimap().isEmpty());

    }

    @Override
    public ImmutableAttributes asImmutable() {
        return delegate.asImmutable();
    }

    @Override
    public Map<Attribute<?>, ?> asMap() {
        return delegate.asMap();
    }

    @Override
    public Set<Attribute<?>> keySet() {
        return delegate.keySet();
    }

    @Override
    public <T> AttributeContainer attribute(Attribute<T> key, T value) {

    assertEqualIgnoringOrder(values, multimap().get(key));

    if (!values.isEmpty()) {
      assertEqualIgnoringOrder(values, multimap().asMap().get(key));
      assertFalse(multimap().isEmpty());
    } else {
      assertNull(multimap().asMap().get(key));
    }

    assertEquals(values.size(), multimap().get(key).size());

    assertEquals(values.size() > 0, multimap().containsKey(key));

   * interface.
   *
   * @since 14.0 (present with return type {@code SortedMap} since 2.0)
   */
  @Override
  public NavigableMap<K, Collection<V>> asMap() {
    return (NavigableMap<K, Collection<V>>) super.asMap();
  }

  /**
   * @serialData key comparator, value comparator, number of distinct keys, and then for each
   *     distinct key: the key, number of values for that key, and key values

            contextualLabel == 'Cannot locate tasks that match \':a:javadocJar\' as task \'javadocJar\' not found in project \':a\'. Some candidates are: \'javadoc\'.'
            additionalData.asMap == [ 'requestedPath' : ':a:javadocJar']
        }

        when:
        buildFile << '''
            subprojects {
                java { withJavadocJar() }
            }
        '''
        then:

                (new NamespaceId('http://some.extra.info', 'foo')): 'anotherValue',
                (new NamespaceId('http://my.extra.info', 'bar')): 'barValue'
        ])

        expect:
        extraInfo.asMap() == [
                (new QName('http://my.extra.info', 'foo')): 'fooValue',
                (new QName('http://some.extra.info', 'foo')): 'anotherValue',
                (new QName('http://my.extra.info', 'bar')): 'barValue'

        def map = [(new NamespaceId('http://my.extra.info', 'some')): 'value']
        def ivyModuleDescriptor = new DefaultIvyModuleDescriptor(map, null, null)

        when:
        ivyModuleDescriptor.getExtraInfo().asMap().put(new QName('namespace', 'new'), 'value')

        then:
        thrown(UnsupportedOperationException)
    }

    def "getBranch returns branch" () {
        given:

        return producer.create(key, coordinationService, owner);
    }

    public Iterable<T> values() {
        return resourceLocks.asMap().values();
    }