returnType.isArray());
      assertSame(
          rootLocaleFormat(
              "%s.%s() must return an array of %s.",
              annotationClass, propertyName, annotationClass.getDeclaringClass()),
          annotationClass.getDeclaringClass(),
          returnType.getComponentType());
    }
  }

  // This is public so that tests for Feature enums we haven't yet imagined
  // can reuse it.

          returnType.isArray());
      assertSame(
          rootLocaleFormat(
              "%s.%s() must return an array of %s.",
              annotationClass, propertyName, annotationClass.getDeclaringClass()),
          annotationClass.getDeclaringClass(),
          returnType.getComponentType());
    }
  }

  // This is public so that tests for Feature enums we haven't yet imagined
  // can reuse it.

   * For the given Enum value {@code rank}, returns the value's {@code "EnumClass.name"}, which is
   * used in exception and warning output.
   */
  private static String getLockName(Enum<?> rank) {
    return rank.getDeclaringClass().getSimpleName() + "." + rank.name();
  }

  /**
   * A {@code CycleDetectingLockFactory.WithExplicitOrdering} provides the additional enforcement of

   *
   * @since 12.0
   */
  @GwtIncompatible // reflection
  public static Field getField(Enum<?> enumValue) {
    Class<?>
        clazz = enumValue.getDeclaringClass();
    try {
      return clazz.getDeclaredField(enumValue.name());
    } catch (NoSuchFieldException impossible) {
      throw new AssertionError(impossible);
    }
  }

  /**

   *
   * @since 12.0
   */
  @GwtIncompatible // reflection
  public static Field getField(Enum<?> enumValue) {
    Class<?>
        clazz = enumValue.getDeclaringClass();
    try {
      return clazz.getDeclaredField(enumValue.name());
    } catch (NoSuchFieldException impossible) {
      throw new AssertionError(impossible);
    }
  }

  /**

   * UnsupportedOperationException} whenever <i>any</i> of its non-nullable parameters are null.
   */
  public void testConstructor(Constructor<?> ctor) {
    Class<?> declaringClass = ctor.getDeclaringClass();
    checkArgument(
        Modifier.isStatic(declaringClass.getModifiers())
            || declaringClass.getEnclosingClass() == null,
        "Cannot test constructor of non-static inner class: %s",

  @Override
  public final Class<? super T> getDeclaringClass() {
    return (Class<? super T>) member.getDeclaringClass();
  }

  /** Returns the type of {@code T}. */
  // Overridden in TypeToken#method() and TypeToken#constructor()
  @SuppressWarnings("unchecked") // The declaring class is T.
  public TypeToken<T> getOwnerType() {
    return (TypeToken<T>) TypeToken.of(getDeclaringClass());
  }

  @CheckForNull

                          // Only package-private methods are a problem.
                          && (m.getModifiers() & (PUBLIC | PROTECTED | PRIVATE)) == 0)
              .transform(Method::getDeclaringClass);
      if (!supersWithPackagePrivateWriteReplace.isPresent()) {
        continue;
      }
      assertWithMessage(
              "To help optimizers, any class that inherits a package-private writeReplace() method"

                          // Only package-private methods are a problem.
                          && (m.getModifiers() & (PUBLIC | PROTECTED | PRIVATE)) == 0)
              .transform(Method::getDeclaringClass);
      if (!supersWithPackagePrivateWriteReplace.isPresent()) {
        continue;
      }
      assertWithMessage(
              "To help optimizers, any class that inherits a package-private writeReplace() method"

      Object featureAsObject = feature; // to work around bogus JDK warning
      if (featureAsObject instanceof Enum) {
        Enum<?> f = (Enum<?>) featureAsObject;
        temp.add(f.getDeclaringClass().getSimpleName() + "." + feature);
      } else {
        temp.add(feature.toString());
      }
    }
    return temp.toString();
  }