---
title: DiskImage.StackableLayer
framework: diskimagekit
role: symbol
role_heading: Protocol
path: diskimagekit/diskimage/stackablelayer
---

# DiskImage.StackableLayer

A marker protocol that stackable disk image layer configuration objects conform to.

## Declaration

```swift
protocol StackableLayer
```

## Overview

Overview The appending(_:) method accepts objects that conform to this protocol.  For more information about image layering, see StackedImage.

## Relationships

### Conforming Types

- [ASIFLayerCreationConfiguration](diskimagekit/asiflayercreationconfiguration.md)

## See Also

### Appending layers and resizing existing images

- [appending(_:)](diskimagekit/diskimage/appending(_:)-4wifj.md)