* @param aggregateType           The type of aggregate stored in this repository.
     * @param aggregateTypeIdentifier The type identifier to store events with
     */
    public HybridJpaRepository(EntityManagerProvider entityManagerProvider,
                               Class<T> aggregateType, String aggregateTypeIdentifier) {
        this(entityManagerProvider, aggregateType, aggregateTypeIdentifier, new NullLockManager());
    }