zOrder property
The layer index of the watermark or background image. When adding one or more watermarks using a watermark array, you must assign a value to zOrder. The valid range is 1,255; otherwise, the SDK will report an error. In other cases, zOrder is optional. The valid range is 0,255, with 0 as the default. 0 represents the bottom layer, and 255 represents the top layer.
Implementation
@JsonKey(name: 'zOrder')
final int? zOrder;