code: func (v *Widget) OverrideFont(description string) {
  	cstr := C.CString(description)
  	defer C.free(unsafe.Pointer(cstr))
  	c := C.pango_font_description_from_string(cstr)
  	C.gtk_widget_override_font(v.native(), c)
  }
docs: // OverrideFont is a wrapper around gtk_widget_override_font().