49 Returning to the present case, it seems to me to be plain that the words "proceedings against a person for an offence" encompass the proceedings leading up to, and including, the conviction and sentencing of the offender. The question whether those words encompass an application for, or the making of, a declaration that a person is a drug trafficker is a good deal more difficult. The answer may depend on whether a drug trafficker declaration can be considered part of the sentence (as to which see R v Rowe (1992) 5 WAR 491 at 498, decided in the context of somewhat different legislation; Sinagra-Brisca at [20] - [21]; Macri at [10] - [13]) and, if not, whether the expression could still extend to proceedings for such an order. However, it seems to me that the scheme of s 38 and s 38B is such that the answer to that question is of no significance in this case. That is because, once the certificate has been obtained for the purpose of conviction and/or sentencing (it was, as the sentencing Judge said, relevant to sentencing in this case and was provided on 8 November 2005, in advance of the sentencing proceedings), it may be used in "any proceedings" subsequently arising out of the commission of the offence in question and, in such a case, the effect of s 38B(3) is that the defendant will be estopped from adducing evidence in rebuttal of any facts stated in the certificate unless he or she has delivered notice in accordance with s 38B(1) in "the proceedings", being the proceedings "for an offence" identified in s 38(2). As I have said, the sentencing proceedings were held on 29 November 2005 and s 38B(1) had not, by then, been complied with. While the effect of what was said by the sentencing Judge was that the appellant may not, by then, have had a reasonable opportunity to deliver the notice referred to in s 38B(1), it is plain from what she said that she considered that a reasonable opportunity to do so had well and truly been afforded by 21 February 2006, when the matter next came before her. The notice had, by then, still not been given. It follows, in my opinion, that she was entitled to rely upon the certificate and that she was right in her conclusion that s 38B(3) applied. I should add that, essentially for the reasons given by the sentencing Judge, I am unable to accept that there is a separate proceeding each time an adjournment is granted.