9 It is unnecessary to consider grounds 1 to 3. We make only this passing observation in relation to ground 1. That ground contends that a failure to comply with s 6AAA of the Sentencing Act 1991 (Vic) is, of itself, sufficient to vitiate the exercise of the sentencing discretion. While we have not heard argument in support of that ground, that seems a highly doubtful proposition. If the sentence, and the reasons provided, reflect the fact that an appropriate discount has been given for the plea of guilty, the failure to specify that quantum in accordance with the section is likely to be viewed as nothing more than a procedural irregularity. We consider that, by itself, an irregularity of that kind would rarely, if ever, justify this Court in interfering with the sentence imposed.