gtk/gtk_since_3_10.go
func (v *HeaderBar) PackEnd(child IWidget) {
	C.gtk_header_bar_pack_end(v.native(), child.toWidget())
}
func (v *HeaderBar) PackEnd(child IWidget) {
	C.gtk_header_bar_pack_end(v.native(), child.toWidget())
}
// PackEnd is a wrapper around gtk_header_bar_pack_end().