public abstract K getKey();

  @Override
  @ParametricNullness
  public abstract V getValue();

  @Override
  @ParametricNullness
  public V setValue(@ParametricNullness V value) {
    throw new UnsupportedOperationException();
  }

  @Override
  public boolean equals(@CheckForNull Object object) {
    if (object instanceof Entry) {
      Entry<?, ?> that = (Entry<?, ?>) object;

  public abstract K getKey();

  @Override
  @ParametricNullness
  public abstract V getValue();

  @Override
  @ParametricNullness
  public V setValue(@ParametricNullness V value) {
    throw new UnsupportedOperationException();
  }

  @Override
  public boolean equals(@CheckForNull Object object) {
    if (object instanceof Entry) {
      Entry<?, ?> that = (Entry<?, ?>) object;

    }
  }

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

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

  @Override
  @Test
  public void adjacentNodes_checkReturnedSetMutability() {

  public void testClear_unsupported() {
    assertThrows(UnsupportedOperationException.class, () -> collection.clear());
    expectUnchanged();
  }

  @CollectionFeature.Require(absent = SUPPORTS_REMOVE)
  @CollectionSize.Require(ZERO)
  public void testClear_unsupportedByEmptyCollection() {
    try {
      collection.clear();
    } catch (UnsupportedOperationException tolerated) {
    }
    expectUnchanged();
  }

            char.class,
            double.class,
            float.class,
            int.class,
            long.class,
            short.class,
            void.class);

    assertThrows(UnsupportedOperationException.class, () -> primitives.remove(boolean.class));
  }

  public void testAllWrapperTypes() {
    Set<Class<?>> wrappers = Primitives.allWrapperTypes();
    assertThat(wrappers)
        .containsExactly(

      throw new UnsupportedOperationException();
    }

    @Override
    public void replaceAll(BiFunction<? super K, ? super V, ? extends V> function) {
      throw new UnsupportedOperationException();
    }

    @Override
    @CheckForNull
    public V putIfAbsent(K key, V value) {
      throw new UnsupportedOperationException();
    }

    @Override

    Iterable<String> iterable = MinimalIterable.from(singleton("a"));
    Iterator<String> iterator = iterable.iterator();
    assertTrue(iterator.hasNext());
    assertEquals("a", iterator.next());
    assertThrows(UnsupportedOperationException.class, () -> iterator.remove());
    assertFalse(iterator.hasNext());
    assertThrows(NoSuchElementException.class, () -> iterator.next());
    assertThrows(IllegalStateException.class, () -> iterable.iterator());
  }

    private boolean throwOnShutDown = false;

    @Override
    protected void run() {
      throw new UnsupportedOperationException("kaboom!");
    }

    @Override
    protected void shutDown() {
      shutDownCalled = true;
      if (throwOnShutDown) {
        throw new UnsupportedOperationException("double kaboom!");
      }
    }

    @Override
    protected Executor executor() {

      }
    }
    expectContents(expected);
  }

  @CollectionSize.Require(absent = ZERO)
  @ListFeature.Require(absent = SUPPORTS_SET)
  public void testReplaceAll_unsupported() {
    assertThrows(UnsupportedOperationException.class, () -> getList().replaceAll(e -> e));
    expectUnchanged();
  }

      when (val protocol = sslSocket.applicationProtocol) {
        null, "" -> null
        else -> protocol
      }
    } catch (e: UnsupportedOperationException) {
      // https://docs.oracle.com/javase/9/docs/api/javax/net/ssl/SSLSocket.html#getApplicationProtocol--
      null
    }
  }

  @SuppressLint("NewApi")
  override fun configureTlsExtensions(