private final ClassSanityTester tester = new ClassSanityTester();
  private Visibility visibility = Visibility.PACKAGE;
  private Predicate<Class<?>> classFilter =
      (Class<?> cls) -> visibility.isVisible(cls.getModifiers());

  /**
   * Restricts the sanity tests for public API only. By default, package-private API are also
   * covered.
   */
  protected final void publicApiOnly() {
    visibility = Visibility.PUBLIC;

        assertEquals(19, fields.length);

        // Verify all fields are public
        for (Field field : fields) {
            assertTrue(java.lang.reflect.Modifier.isPublic(field.getModifiers()), "Field " + field.getName() + " should be public");
        }
    }

    /**
     * Test typical server configuration scenario
     */
    @Test

  public void testMockingMockito() throws Exception {
    RateLimiter mock = mock(RateLimiter.class);
    for (Method method : RateLimiter.class.getMethods()) {
      if (!isStatic(method.getModifiers())
          && !NOT_WORKING_ON_MOCKS.contains(method.getName())
          && !method.getDeclaringClass().equals(Object.class)) {
        method.invoke(mock, arbitraryParameters(method));
      }
    }
  }

  public void testMockingMockito() throws Exception {
    RateLimiter mock = mock(RateLimiter.class);
    for (Method method : RateLimiter.class.getMethods()) {
      if (!isStatic(method.getModifiers())
          && !NOT_WORKING_ON_MOCKS.contains(method.getName())
          && !method.getDeclaringClass().equals(Object.class)) {
        method.invoke(mock, arbitraryParameters(method));
      }
    }
  }

      Class<?> c, ImmutableSet<String> ignore) {
    ImmutableSet.Builder<String> methods = ImmutableSet.builder();
    for (Method method : c.getMethods()) {
      if (Modifier.isStatic(method.getModifiers()) || ignore.contains(method.getName())) {
        continue;
      }
      StringBuilder signature =
          new StringBuilder()
              .append(typeName(method.getReturnType()))
              .append(" ")

            assertDoesNotThrow(() -> {
                java.lang.reflect.Constructor<Strings> constructor = Strings.class.getDeclaredConstructor();
                assertTrue(java.lang.reflect.Modifier.isPrivate(constructor.getModifiers()), "Constructor should be private");
            }, "Should be able to access private constructor via reflection");
        }
    }

        assertNotNull(method, "updateMemberOf method should exist");
        assertTrue("updateMemberOf should be public", java.lang.reflect.Modifier.isPublic(method.getModifiers()));
    }

    /**
     * Test processDirectMemberOf collects group IDs for parent lookup.
     */
    @Test
    public void test_processDirectMemberOf_collectsGroupIds() throws Exception {

  private static FluentIterable<Field> getConstantFields() {
    return FluentIterable.from(asList(MediaType.class.getDeclaredFields()))
        .filter(
            field -> {
              int modifiers = field.getModifiers();
              return isPublic(modifiers)
                  && isStatic(modifiers)
                  && isFinal(modifiers)
                  && MediaType.class.equals(field.getType());
            });
  }

  private final ClassSanityTester tester = new ClassSanityTester();
  private Visibility visibility = Visibility.PACKAGE;
  private Predicate<Class<?>> classFilter =
      (Class<?> cls) -> visibility.isVisible(cls.getModifiers());

  /**
   * Restricts the sanity tests for public API only. By default, package-private API are also
   * covered.
   */
  protected final void publicApiOnly() {
    visibility = Visibility.PUBLIC;

    // in which case we need to make sure the subclass's owner type is a subtype of the
    // supertype's owner.
    return Modifier.isStatic(((Class<?>) supertype.getRawType()).getModifiers())
        || supertype.getOwnerType() == null
        || isOwnedBySubtypeOf(supertype.getOwnerType());
  }

  private boolean isSubtypeOfArrayType(GenericArrayType supertype) {