Is it possible to start with a collapsed panel?

[fabrouy]

controller do
    def index
      left_sidebar!(collapsed: true)
      super
    end
end

I see collapsed: true adds the ability to collapse/expand the panel. However does not allow to start with a collapsed panel.

I would change collapsed to collapsible because collapsed sounds more like a state. And would add collapsed to config if panel appears collapsed/expanded on page load.

What do you think?