github.com/wfusion/gofusion@v1.1.14/common/infra/watermill/docs/layouts/shortcodes/collapse-toggle.html (about)

     1  <h4><a class="collapse-toggle" href="#{{ (.Get "box_id") }}" onclick="ga('send', 'event', 'watermill', 'box_{{ .Parent.Get "id" }}_{{ (.Get "box_id") }}');">{{ .Inner }}&nbsp;<span style="color: rgba(0,0,0,.5);">▾</span></a></h4>