static <T extends ForwardingObject> void testForwardingObject(Class<T> forwarderClass) {
    List<Class<?>> interfaces = new ArrayList<>(Arrays.asList(forwarderClass.getInterfaces()));
    // Desugaring may introduce AutoCloseable as an extra interface.
    interfaces.remove(AutoCloseable.class);
    @SuppressWarnings("unchecked") // super interface type of T
    Class<? super T> interfaceType = (Class<? super T>) Iterables.getOnlyElement(interfaces);

        // Assert - toString starts with class name and contains message when present
        if (message == null) {
            assertEquals(SMBProtocolDowngradeException.class.getName(), ex.toString());
        } else if (message.isEmpty()) {
            // Throwable.toString prints class + ": " (with space) even for empty string
            assertEquals(SMBProtocolDowngradeException.class.getName() + ": ", ex.toString());
        } else {

    class HappyPath {
        @Test
        void acceptWithMockedFile() throws Exception {
            SmbFile mockFile = mock(SmbFile.class);
            when(mockFile.getPath()).thenReturn("/share/file.txt");
            assertTrue(ALWAYSACTIVE.accept(mockFile));
        }
    }

    @Nested
    @DisplayName("Invalid input – null file handling")
    class InvalidPath {
        @Test

      return ImmutableMap.copyOf(introspector.mappings);
    }

    @Override
    void visitClass(Class<?> clazz) {
      visit(clazz.getGenericSuperclass());
      visit(clazz.getGenericInterfaces());
    }

    @Override
    void visitParameterizedType(ParameterizedType parameterizedType) {
      Class<?> rawClass = (Class<?>) parameterizedType.getRawType();
      TypeVariable<?>[] vars = rawClass.getTypeParameters();

   *
   * @param eventClass a class to assert that the returned event is an instance of, or null to
   *     take any event class.
   * @param elapsedMs the time in milliseconds elapsed since the immediately-preceding event, or
   *     -1L to take any duration.
   */
  fun takeEvent(
    eventClass: Class<out ConnectionEvent>? = null,
    elapsedMs: Long = -1L,
  ): ConnectionEvent {

    assertThat(Enums.getIfPresent(TestEnum.class, "CHEETO")).isPresent();
    assertThat(Enums.getIfPresent(TestEnum.class, "HONDA")).isPresent();
    assertThat(Enums.getIfPresent(TestEnum.class, "POODLE")).isPresent();

    assertThat(Enums.getIfPresent(TestEnum.class, "CHEETO")).hasValue(TestEnum.CHEETO);
    assertThat(Enums.getIfPresent(TestEnum.class, "HONDA")).hasValue(TestEnum.HONDA);

            }

            private boolean isQualifiedForInterpolation(Field field, Class<?> fieldType) {
                if (Map.class.equals(fieldType) && "locations".equals(field.getName())) {
                    return false;
                }
                if (InputLocation.class.equals(fieldType)) {
                    return false;
                }

            CommonServerMessageBlockResponse incompatibleResponse = mock(CommonServerMessageBlockResponse.class);

            assertThrows(IllegalArgumentException.class, () -> {
                testRequest.setResponse(incompatibleResponse);
            });
        }
    }

    @Nested
    @DisplayName("Encoding Tests")
    class EncodingTests {

        @Test
        @DisplayName("encode should validate size calculation")

    }

    @Override
    public <T> T lookup(Class<T> type, String name) {
        return null;
    }

    @Override
    public <T> Optional<T> lookupOptional(Class<T> type) {
        return Optional.empty();
    }

    @Override
    public <T> Optional<T> lookupOptional(Class<T> type, String name) {
        return Optional.empty();
    }

    @Override

/** Exception classes for use in tests. */
@GwtCompatible
final class TestExceptions {
  static final class SomeError extends Error {}

  static final class SomeCheckedException extends Exception {}

  static final class SomeOtherCheckedException extends Exception {}

  static final class YetAnotherCheckedException extends Exception {}

  static final class SomeUncheckedException extends RuntimeException {}