Akka.Persistence.MongoDb.Snapshot.MongoDbSnapshotStore.DeleteAsync C# (CSharp) Method

        protected override Task DeleteAsync(SnapshotMetadata metadata)
        {
            var builder = Builders<SnapshotEntry>.Filter;
            var filter = builder.Eq(x => x.PersistenceId, metadata.PersistenceId);

            if (metadata.SequenceNr > 0 && metadata.SequenceNr < long.MaxValue)
                filter &= builder.Eq(x => x.SequenceNr, metadata.SequenceNr);

            if (metadata.Timestamp != DateTime.MinValue && metadata.Timestamp != DateTime.MaxValue)
                filter &= builder.Eq(x => x.Timestamp, metadata.Timestamp.Ticks);

            return _snapshotCollection.Value.FindOneAndDeleteAsync(filter);
        }