func (v *Notebook) GetGroupName() (string, error) {
	c := C.gtk_notebook_get_group_name(v.native())
	if c == nil {
		return "", errors.New("No group name")
	}
	return goString(c), nil
}
func (v *Notebook) GetGroupName() (string, error) {
	c := C.gtk_notebook_get_group_name(v.native())
	if c == nil {
		return "", errors.New("No group name")
	}
	return goString(c), nil
}
// GetGroupName() is a wrapper around gtk_notebook_get_group_name().