renderIcon 
  open fun renderIcon(widget: <Error class: unknown class>, size: <Error class: unknown class>): <Error class: unknown class>(source)
Renders an icon of given size.
The base of the icon is set by the last call to one of:
- method@MarkAttributes.set_pixbuf 
- method@MarkAttributes.set_gicon 
- method@MarkAttributes.set_icon_name 
Return
A #GdkPaintable. The paintable belongs to @attributes and should not be unreffed.
Parameters
widget
widget of which style settings may be used.
size
size of the rendered icon.