Akka.Persistence.MongoDb.Snapshot.MongoDbSnapshotStore.PreStart C# (CSharp) Метод

        protected override void PreStart()
        {
            base.PreStart();

            _snapshotCollection = new Lazy<IMongoCollection<SnapshotEntry>>(() =>
            {
                var connectionString = new MongoUrl(_settings.ConnectionString);
                var client = new MongoClient(connectionString);

                var snapshot = client.GetDatabase(connectionString.DatabaseName);

                var collection = snapshot.GetCollection<SnapshotEntry>(_settings.Collection);
                if (_settings.AutoInitialize)
                {
                    collection.Indexes.CreateOneAsync(
                        Builders<SnapshotEntry>.IndexKeys
                        .Ascending(entry => entry.PersistenceId)
                        .Descending(entry => entry.SequenceNr))
                        .Wait();
                }

                return collection;
            });
        }