class RestoreContext {
public:
    enum class RestoreType {
        kExternal,  // Restore on the PlanExecutor by an external call
        kYield      // Internal restore after yield
    };

    RestoreContext() = default;  // <--- should be deleted
    /* implicit */ RestoreContext(const CollectionPtr* coll) : _collection(coll) {}
    /* implicit */ RestoreContext(RestoreType type, const CollectionPtr* coll)
        : _type(type), _collection(coll) {}

    RestoreType type() const {
        return _type;
    }
    const CollectionPtr* collection() const {
        return _collection;
    }

private:
    RestoreType _type = RestoreType::kExternal;
    const CollectionPtr* _collection;
};