assertNotNull(
        rootLocaleFormat("%s must be annotated with @TesterAnnotation.", annotationClass),
        annotationClass.getAnnotation(TesterAnnotation.class));
    Retention retentionPolicy = annotationClass.getAnnotation(Retention.class);
    assertNotNull(
        rootLocaleFormat("%s must have a @Retention annotation.", annotationClass),
        retentionPolicy);
    assertEquals(

    assertNotNull(
        rootLocaleFormat("%s must be annotated with @TesterAnnotation.", annotationClass),
        annotationClass.getAnnotation(TesterAnnotation.class));
    Retention retentionPolicy = annotationClass.getAnnotation(Retention.class);
    assertNotNull(
        rootLocaleFormat("%s must have a @Retention annotation.", annotationClass),
        retentionPolicy);
    assertEquals(

  final <T> T isSubtype(T sub) {
    Type returnType = method.getGenericReturnType();
    Type paramType = getOnlyParameterType();
    TestSubtype spec = method.getAnnotation(TestSubtype.class);
    assertWithMessage("%s is subtype of %s", paramType, returnType)
        .that(TypeToken.of(paramType).isSubtypeOf(returnType))
        .isTrue();

    return declaration;
  }

  @Override
  public boolean isAnnotationPresent(Class<? extends Annotation> annotationType) {
    return getAnnotation(annotationType) != null;
  }

  @Override
  public <A extends Annotation> @Nullable A getAnnotation(Class<A> annotationType) {
    checkNotNull(annotationType);
    for (Annotation annotation : annotations) {
      if (annotationType.isInstance(annotation)) {

  /**
   * Returns the {@link Field} in which {@code enumValue} is defined. For example, to get the {@code
   * Description} annotation on the {@code GOLF} constant of enum {@code Sport}, use {@code
   * Enums.getField(Sport.GOLF).getAnnotation(Description.class)}.
   *
   * @since 12.0
   */
  public static Field getField(Enum<?> enumValue) {
    Class<?>
        clazz = enumValue.getDeclaringClass();
    try {

     */
    @Hoge(bbb = "3")
    @Test
    public void testGetProperties() throws Exception {
        final Method m = ClassUtil.getMethod(getClass(), "testGetProperties");
        final Annotation anno = m.getAnnotation(Hoge.class);
        final Map<String, Object> props = AnnotationUtil.getProperties(anno);
        assertThat((String) props.get("aaa"), is("123"));
        assertThat((String) props.get("bbb"), is("3"));

   * Checks whether {@code method} is thread-safe, as indicated by the presence of the {@link
   * AllowConcurrentEvents} annotation.
   */
  private static boolean isDeclaredThreadSafe(Method method) {
    return method.getAnnotation(AllowConcurrentEvents.class) != null;
  }

  /**
   * Subscriber that synchronizes invocations of a method to ensure that only one thread may enter
   * the method at a time.
   */
  @VisibleForTesting