func (v *HeaderBar) GetHasSubtitle() bool {
	c := C.gtk_header_bar_get_has_subtitle(v.native())
	return gobool(c)
}
func (v *HeaderBar) GetHasSubtitle() bool {
	c := C.gtk_header_bar_get_has_subtitle(v.native())
	return gobool(c)
}
// GetHasSubtitle is a wrapper around gtk_header_bar_get_has_subtitle().