Field[] fields = type.getDeclaredFields();
    Arrays.sort(fields, BY_FIELD_NAME);
    for (Field field : fields) {
      if (Modifier.isPublic(field.getModifiers())
          && Modifier.isStatic(field.getModifiers())
          && Modifier.isFinal(field.getModifiers())) {
        if (field.getGenericType() == field.getType() && type.isAssignableFrom(field.getType())) {
          field.setAccessible(true);
          try {

        Method[] methods = clazz.getMethods();

        // Short circuit for the (hopefully) majority of cases where the
        // clazz is public
        if (Modifier.isPublic(clazz.getModifiers())) {
            return methods;
        }

        // No luck - the class is not public, so we're going the longer way.
        MethodInfo[] methodInfos = new MethodInfo[methods.length];

    Field[] fields = type.getDeclaredFields();
    Arrays.sort(fields, BY_FIELD_NAME);
    for (Field field : fields) {
      if (Modifier.isPublic(field.getModifiers())
          && Modifier.isStatic(field.getModifiers())
          && Modifier.isFinal(field.getModifiers())) {
        if (field.getGenericType() == field.getType() && type.isAssignableFrom(field.getType())) {
          field.setAccessible(true);
          try {

      // Interfaces can have default methods that aren't abstract.
      // No need to verify them.
      // Can't check isDefault() for Android compatibility.
      if (!Modifier.isAbstract(method.getModifiers())) {
        continue;
      }
      // The interface could be package-private or private.
      // filter out equals/hashCode/toString
      if (method.getName().equals("equals")

      // Interfaces can have default methods that aren't abstract.
      // No need to verify them.
      // Can't check isDefault() for Android compatibility.
      if (!Modifier.isAbstract(method.getModifiers())) {
        continue;
      }
      // The interface could be package-private or private.
      // filter out equals/hashCode/toString
      if (method.getName().equals("equals")

    Set<MethodSignature> publicStaticMethods = newHashSet();

    for (Method method : clazz.getDeclaredMethods()) {
      int modifiers = method.getModifiers();
      if (isPublic(modifiers) && isStatic(modifiers)) {
        publicStaticMethods.add(new MethodSignature(method));
      }
    }

    return publicStaticMethods;
  }

    Set<MethodSignature> publicStaticMethods = newHashSet();

    for (Method method : clazz.getDeclaredMethods()) {
      int modifiers = method.getModifiers();
      if (isPublic(modifiers) && isStatic(modifiers)) {
        publicStaticMethods.add(new MethodSignature(method));
      }
    }

    return publicStaticMethods;
  }

  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;

      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(" ")

  public void testMockingMockito() throws Exception {
    RateLimiter mock = Mockito.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));
      }
    }
  }