[QGIS-Developer] How to set defaults to QgsProcessingParameterMultipleLayers

[C Hamilton]

>
> > Is there a way to automatically populate as default value of selected
> layers in QgsProcessingParameterMultipleLayers with the selected layers or
> selected groups of layers in the "Layer Panel"?  This would be incredibly
> useful.
>
> You'd (unfortunately -- it's not a trivial change) need to do this via
> a custom Processing widget wrapper, so that your parameter gets its
> own widget class where you can implement this logic.


Nyall, Is there an example somewhere on how to do a custom processing
widget wrapper?

Thanks!
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