Method read

kdevplatform/serialization/itemrepository.h:2538–2544

struct LockedItemRepository {
    template<typename Context, typename Op>
    static auto read(Op&& op)
    {
        const auto& repo = ItemRepositoryFor<Context>::repo();

        QMutexLocker lock(repo.mutex());
        return op(repo);
    }

    template<typename Context, typename Op>
    static auto write(Op&& op)