Switch button icon on switch switch-overlay

[Kirby]

In XF 2.1 and 2.2 I could do
Code:

<xf:button href="..." class="button--link button--icon button--icon--show"
        data-xf-click="switch-overlay"
        data-sk-watch="addClass:button--icon--show,removeClass:button--icon--hide"
        data-sk-unwatch="removeClass:button--icon--show,addClass:button--icon--hide">
        <span class="u-hideNarrow">Some Text</span>
</xf:button>

but this does not work any longer in XenForo 2.3

How can the same effect be achieved easily & efficiently...

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Switch button icon on switch switch-overlay

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