The relevancy of this sub-section is only to the interpretation of the provisions of the Act, for no previous certificate was or could have been granted to the present respondent now applying to us for a certificate. Section 6 operates to impose upon the courts to which it applies a duty to hear and consider applications for indemnity certificates and to exercise a judicial discretion in granting or refusing them. It is apparent that this Court, the jurisdiction of which depends upon the Constitution of the Commonwealth and the laws validly made thereunder, could not in such a matter be affected by an exercise of the authority of the State legislature. It is therefore not a court to which s. 6 (1) of its own force can apply. Nor is there any reason to think that the term "Court" in s. 6 (1) was intended to include the High Court of Australia. No one could suppose that the general words of s. 5 were used with any idea that they would cover proceedings in the High Court and that no doubt is true of the word "Court" in s. 6 (1). But in any case, since s. 6 cannot apply to the High Court, it follows that, on ordinary principles, it should not be construed as intending to do so.