I have a single static chart (built with ChartJS; it's displayed on a canvas) and I would like to have it as a collapsible control button that could be toggled (just like the map overlay or attribution). I intend to place it under the Zoom buttons.

How do I achieve this?

controls: ol.control.defaults({
      attributionOptions: ({
          collapsible: true
      new ol.control.OverviewMap(),

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