code: func (v *Actionable) GetActionName() (string, error) {
  	c := C.gtk_actionable_get_action_name(v.native())
  	if c == nil {
  		return "", nilPtrErr
  	}
  	return C.GoString((*C.char)(c)), nil
  }
docs: // GetActionName is a wrapper around gtk_actionable_set_action_name().
  // Since 3.4