How to use the @aws-cdk/aws-sns-subscriptions.EmailSubscription function in @aws-cdk/aws-sns-subscriptions

protected bound(scope: cdk.Construct, _stage: codepipeline.IStage, options: codepipeline.ActionBindOptions):
      codepipeline.ActionConfig {
    if (this.props.notificationTopic) {
      this._notificationTopic = this.props.notificationTopic;
    } else if ((this.props.notifyEmails || []).length > 0) {
      this._notificationTopic = new sns.Topic(scope, 'TopicResource');
    }

    if (this._notificationTopic) {
      this._notificationTopic.grantPublish(options.role);
      for (const notifyEmail of this.props.notifyEmails || []) {
        this._notificationTopic.addSubscription(new subs.EmailSubscription(notifyEmail));
      }
    }

    return {
      configuration: this._notificationTopic
        ? {
          NotificationArn: this._notificationTopic.topicArn,
          CustomData: this.props.additionalInformation,
        }
        : undefined,
    };
  }
}