| CustomBuilder | () => any | Must be decorated by **@Builder**. For details, see [@Builder](../../quick-start/arkts-dynamic-ui-elememt-building.md#builder).|
## PixelStretchEffectOptions<sup>10+</sup>
Describes the pixel stretch effect options.
| Name | Type | Mandatory | Description |
| ----------- | ------ | ---- | ---------- |
| left | [Length](#length) | No | Length by which a pixel is stretched towards the left edge of the image.|
| right | [Length](#length) | No | Length by which a pixel is stretched towards the right edge of the image.|
| top | [Length](#length) | No | Length by which a pixel is stretched towards the top edge of the image.|
| bottom | [Length](#length) | No | Length by which a pixel is stretched towards the bottom edge of the image.|