public static ValueTask <IManagedRwSqlTransaction> BeginRwSerializable (this IDbProvider dbProvider, CancellationToken cancellationToken = default) => dbProvider.BeginRw(IsolationLevel.Serializable, cancellationToken);
public static ValueTask <IManagedRwSqlTransaction> BeginRwRepeatableRead (this IDbProvider dbProvider, CancellationToken cancellationToken = default) => dbProvider.BeginRw(IsolationLevel.RepeatableRead, cancellationToken);