(2) The levying of the tax, fee, duty or other impost issue: By a notice of contention, the respondent raised defensively an argument to support the orders of the Court of Appeal on an additional ground favoured only by Gzell J in that Court[52]. That ground presents the issue whether, in terms of the applicable provisions of the federal tax legislation giving rise to the propounded obligation of the appellant to the respondent[53], such proceedings were ones by which a "tax, fee, duty or other impost is levied, collected or administered". If, properly characterised, the proceedings do not engage such a description, such proceedings would not have been assigned to the Equity Division of the Supreme Court even if an ambulatory meaning were given to the Rules of the Supreme Court of New South Wales applicable when the respondent's proceedings were commenced in the District Court. They would therefore have remained in the Common Law Division. Hence, they would have qualified under the District Court Act, s 44(1)(a)(i), to enliven the jurisdiction of the District Court "to hear and dispose of" such an action and to do so under federal law in this case.