Refreshing "layer render order" widget

[المشرف العام]

i made changes in the render order of my map canvas using a :

qgis.utils.iface.mapCanvas().setLayerSet(a)"a" being a list of QgsMapCanvasLayer

My code is working as expected (i see result on map canvas) but the "layer render order" widget (dunno the right english name...) is not refreshing ...

How can i programmatically do that ?

Thanks !



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