Gtk.Style::draw_box_gap

function vfunc_draw_box_gap(cr:cairo.Context, state_type:Gtk.StateType, shadow_type:Gtk.ShadowType, widget:Gtk.Widget, detail:String, x:Number, y:Number, width:Number, height:Number, gap_side:Gtk.PositionType, gap_x:Number, gap_width:Number):void {
}