func (o *otelclient) Do(ctx context.Context, cmd rueidis.Completed) (resp rueidis.RedisResult) {
    ctx, span := o.start(ctx, first(cmd.Commands()), sum(cmd.Commands()), o.tAttrs)
    if o.dbStmtFunc != nil {
        span.SetAttributes(dbstmt.String(o.dbStmtFunc(cmd.Commands())))
    }