}

  @Override
  @Test
  public void nodes_checkReturnedSetMutability() {
    assume().that(graphIsMutable()).isTrue();

    Set<Integer> nodes = network.nodes();
    UnsupportedOperationException e =
        assertThrows(UnsupportedOperationException.class, () -> nodes.add(N2));
    addNode(N1);
    assertThat(network.nodes()).containsExactlyElementsIn(nodes);
  }

  @Override
  @Test

  public void testReplaceValuesRemoveNotSupported() {
    List<V> values = Collections.singletonList(v3());
    try {
      multimap().replaceValues(k0(), values);
      fail("Expected UnsupportedOperationException");
    } catch (UnsupportedOperationException expected) {
      // success
    }
  }

  @MapFeature.Require(absent = SUPPORTS_PUT)
  public void testReplaceValuesPutNotSupported() {

  }

  public final boolean add(E e) {
    throw new UnsupportedOperationException();
  }

  public final boolean remove(@Nullable Object object) {
    throw new UnsupportedOperationException();
  }

  public final boolean addAll(Collection<? extends E> newElements) {
    throw new UnsupportedOperationException();
  }

  public final boolean removeAll(Collection<?> oldElements) {

   *
   * @throws UnsupportedOperationException always
   * @deprecated Unsupported operation.
   */
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  public final void add(@ParametricNullness E e) {
    throw new UnsupportedOperationException();
  }

  /**

  public final void clear() {
    throw new UnsupportedOperationException();
  }

  /**
   * Guaranteed to throw an exception and leave the {@code RangeMap} unmodified.
   *
   * @throws UnsupportedOperationException always
   * @deprecated Unsupported operation.
   */
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")

   * @throws UnsupportedOperationException always
   * @deprecated Unsupported operation.
   */
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  public final boolean replace(K key, V oldValue, V newValue) {
    throw new UnsupportedOperationException();
  }

  /**
   * Guaranteed to throw an exception and leave the map unmodified.
   *
   * @throws UnsupportedOperationException always

  override fun getApplicationBufferSize(): Int {
    throw UnsupportedOperationException()
  }

  override fun getCipherSuite(): String {
    throw UnsupportedOperationException()
  }

  override fun getCreationTime(): Long {
    throw UnsupportedOperationException()
  }

  override fun getId(): ByteArray {
    throw UnsupportedOperationException()
  }

  override fun getLastAccessedTime(): Long {

        throw new UnsupportedOperationException("Cannot change the version information for an attached artifact."
                + " It is derived from the main artifact.");
    }

    public String getBaseVersion() {
        return parent.getBaseVersion();
    }

    public void setBaseVersion(String baseVersion) {

      fail("UnsupportedOperationException expected");
    } catch (UnsupportedOperationException expected) {
    }
    entry = unmod.firstEntry();
    try {
      entry.setValue("four");
      fail("UnsupportedOperationException expected");
    } catch (UnsupportedOperationException expected) {
    }
    entry = unmod.lastEntry();
    try {
      entry.setValue("four");
      fail("UnsupportedOperationException expected");

    throw new UnsupportedOperationException();
  }

  /**
   * Guaranteed to throw an exception and leave the multimap unmodified.
   *
   * @throws UnsupportedOperationException always
   * @deprecated Unsupported operation.
   */
  @CanIgnoreReturnValue
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")