multimap.put("tree", 4);
    multimap.put("tree", 0);
    return multimap;
  }

  public void testToString() {
    SetMultimap<String, Integer> multimap = create();
    multimap.putAll("bar", asList(3, 1, 2));
    multimap.putAll("foo", asList(2, 3, 1, -1, 4));
    assertThat(multimap.toString()).isEqualTo("{bar=[1, 2, 3], foo=[-1, 1, 2, 3, 4]}");
  }

  public void testOrderedGet() {

            synchronized (systemProperties) { // avoid concurrent modification if someone else sets/removes an unrelated
                // system property
                this.systemProperties.putAll(systemProperties);
            }
        } else {
            this.systemProperties = null;
        }

        return this;
    }

    @Override
    public Properties getUserProperties() {

        Map<String, String> mergedProps = new HashMap<>();
        mergedProps.putAll(getPropertiesFromRequestedProfiles(request));
        mergedProps.putAll(new HashMap<String, String>((Map) request.getSystemProperties()));
        mergedProps.putAll(new HashMap<String, String>((Map) request.getUserProperties()));
        return mergedProps;
    }

        final Map<String, Object> sourceMap = new HashMap<>();
        if (name != null) {
            sourceMap.put("name", name);
        }
        if (attributes != null) {
            sourceMap.putAll(attributes);
        }
        return sourceMap;
    }

            synchronized (
                    systemProperties) { // avoid concurrentmodification if someone else sets/removes an unrelated system
                // property
                this.systemProperties.putAll(systemProperties);
            }
        } else {
            this.systemProperties = null;
        }

        return this;
    }

    @Override
    public Properties getUserProperties() {

        validateFields(body.doc, this::throwValidationErrorApi);
        body.crudMode = CrudMode.CREATE;
        final Map<String, Object> doc = getDoc(body).map(entity -> {
            try {
                entity.putAll(fessConfig.convertToStorableDoc(body.doc));

                final String newId = ComponentUtil.getCrawlingInfoHelper().generateId(entity);
                entity.put(fessConfig.getIndexFieldId(), newId);

        HashMap<String, String> result = new HashMap<>(getSystemProperties());
        if (project != null) {
            result.putAll(project.getModel().getProperties());
        }
        result.putAll(getUserProperties());
        return result;
    }

    @Nonnull
    @Override
    public Version getMavenVersion() {

                [(jsonChange.toApiChange()): jsonChange.acceptation]
            }
            acceptedApiChanges.acceptedChanges.putAll(acceptedChanges)
        }
        return acceptedApiChanges
    }

    Map<String, String> toAcceptedChangesMap() {
        acceptedChanges.collectEntries { change ->

  }

  public final void testPutAll() {
    for (Table<Character, Integer, String> testInstance : getTestInstances()) {
      assertThrows(
          UnsupportedOperationException.class,
          () -> testInstance.putAll(ImmutableTable.of('a', 1, "blah")));
    }
  }

  public final void testRemove() {
    for (Table<Character, Integer, String> testInstance : getTestInstances()) {

        Properties merged = new Properties();
        if (sourceDominant) {
            merged.putAll(target.getProperties());
            merged.putAll(source.getProperties());
        } else {
            merged.putAll(source.getProperties());
            merged.putAll(target.getProperties());
        }
        target.setProperties(merged);
        target.setLocation(
                "properties",