* {@code <? extends Map<String, Integer>[]>} etc.
   */
  public final boolean isArray() {
    return getComponentType() != null;
  }

  /**
   * Returns true if this type is one of the nine primitive types (including {@code void}).
   *
   * @since 15.0
   */
  public final boolean isPrimitive() {
    return (runtimeType instanceof Class) && ((Class<?>) runtimeType).isPrimitive();
  }

  /**