Is there a "collapse all groups (layersets)" shortcut?

A related topic here:

https://community.adobe.com/t5/photoshop-ecosystem-discussions/action-or-script-to-expand-unfold-layer-groups/m-p/13077014

For completeness, I wanted to add the following code, however it no longer appears to work?

// Expand all layer sets  
// https://forums.adobe.com/message/5764024#5764024  
function openAllLayerSets(parent) {
    for (var setIndex = 0; setIndex < parent.layerSets.length; setIndex++) {
        app.activeDocument.activeLayer = parent.layerSets[setIndex].layers[0];
        openAllLayerSets(parent.layerSets[setIndex]);
    }
}
openAllLayerSets(app.activeDocument);

Have you tried cmd-clicking the »open triengle«-icon that indicates this?