FindNextMenuInsertionIndex
int32 index = FindNextMenuInsertionIndex(fInterfaceMenu, name);
int32 insertAt = FindNextMenuInsertionIndex(fAuthenticatorField->Menu(),
int32 insertAt = FindNextMenuInsertionIndex(menu, name.String());
extern int32 FindNextMenuInsertionIndex(BMenu *menu, const char *name,
insertAt = FindNextMenuInsertionIndex(menu, name);