How to use the @aws-cdk/aws-s3.BucketNotificationDestinationType function in @aws-cdk/aws-s3

const permissionId = `AllowBucketNotificationsFrom${bucket.node.uniqueId}`;

    if (this.fn.node.tryFindChild(permissionId) === undefined) {
      this.fn.addPermission(permissionId, {
        sourceAccount: Stack.of(bucket).account,
        principal: new iam.ServicePrincipal('s3.amazonaws.com'),
        sourceArn: bucket.bucketArn
      });
    }

    // if we have a permission resource for this relationship, add it as a dependency
    // to the bucket notifications resource, so it will be created first.
    const permission = this.fn.node.findChild(permissionId) as CfnResource;

    return {
      type: s3.BucketNotificationDestinationType.LAMBDA,
      arn: this.fn.functionArn,
      dependencies: permission ? [ permission ] : undefined
    };
  }
}

}
    }));

    // if this queue is encrypted, we need to allow S3 to read messages since that's how
    // it verifies that the notification destination configuration is valid.
    if (this.queue.encryptionMasterKey) {
      this.queue.encryptionMasterKey.addToResourcePolicy(new iam.PolicyStatement({
        principals: [new iam.ServicePrincipal('s3.amazonaws.com')],
        actions: ['kms:GenerateDataKey*', 'kms:Decrypt'],
        resources: ['*'],
      }), /* allowNoOp */ false);
    }

    return {
      arn: this.queue.queueArn,
      type: s3.BucketNotificationDestinationType.QUEUE,
      dependencies: [ this.queue ]
    };
  }

public bind(_scope: Construct, bucket: s3.IBucket): s3.BucketNotificationDestinationConfig {
    this.topic.addToResourcePolicy(new iam.PolicyStatement({
      principals: [new iam.ServicePrincipal('s3.amazonaws.com')],
      actions: ['sns:Publish'],
      resources: [this.topic.topicArn],
      conditions: {
        ArnLike: { "aws:SourceArn": bucket.bucketArn }
      }
    }));

    return {
      arn: this.topic.topicArn,
      type: s3.BucketNotificationDestinationType.TOPIC,
      dependencies: [ this.topic ] // make sure the topic policy resource is created before the notification config
    };
  }
}