ItemBuilder
typename Menu<ParentBuilder>::ItemBuilder
typename Menu<ParentBuilder>::ItemBuilder
typename Menu<ParentBuilder>::ItemBuilder
typename Menu<ParentBuilder>::ItemBuilder
inline ItemBuilder AddItem(BMenuItem* item);
inline ItemBuilder AddItem(BMenu* menu);
inline ItemBuilder AddItem(const char* label, BMessage* message,
inline ItemBuilder AddItem(const char* label, uint32 messageWhat,