Prooph\EventStore\Snapshot\Snapshot::lastVersion PHP Метод

    public function lastVersion()
    {
        return $this->lastVersion;
    }

 /**
  * Save a snapshot
  *
  * @param Snapshot $snapshot
  * @return void
  */
 public function save(Snapshot $snapshot)
 {
     $table = $this->getTable($snapshot->aggregateType());
     $this->connection->insert($table, ['aggregate_type' => $snapshot->aggregateType()->toString(), 'aggregate_id' => $snapshot->aggregateId(), 'last_version' => $snapshot->lastVersion(), 'created_at' => $snapshot->createdAt()->format('Y-m-d\\TH:i:s.u'), 'aggregate_root' => serialize($snapshot->aggregateRoot())], ['string', 'string', 'integer', 'string', 'blob']);
     $queryBuilder = $this->connection->createQueryBuilder();
     $table = $this->getTable($snapshot->aggregateType());
     $queryBuilder->delete($table)->where('aggregate_type = :aggregate_type')->andWhere('aggregate_id = :aggregate_id')->andWhere('last_version < :last_version')->setParameter('aggregate_type', $snapshot->aggregateType()->toString())->setParameter('aggregate_id', $snapshot->aggregateId())->setParameter('last_version', $snapshot->lastVersion());
     $queryBuilder->execute();
 }