final boolean isVolatile() {
    return Modifier.isVolatile(getModifiers());
  }

  /** Returns true if the field is transient. */
  final boolean isTransient() {
    return Modifier.isTransient(getModifiers());
  }

  @Override
  public boolean equals(@CheckForNull Object obj) {
    if (obj instanceof Invokable) {
      Invokable<?, ?> that = (Invokable<?, ?>) obj;