. 15. Clause (a) of sub-section (1) of Section 99, in our opinion, is clear and unambiguous. It specifically and unequivocally declares that only those persons who are D 'Graduates of the University' are entitled to have their names • entered in the register of registered graduates. As already observed earlier, University means any university mentioned in the Schedule. It is not even the case of the writ-petitioner either before the High Court or before us that name of any person who E has graduated from the University as defined in Section 2(36) of the Act has not been included in the register. It, therefore, cannot be said that the interpretation of the respondent-University is unwarranted, illegal or contrary to statutory provisions. In our· opinion, the learned C'ounsel for the respondent-University is also F right in contending that the constitutional validity of statutory provision has not been challenged by the writ-petitioner and, as such, the Court is called.upon only to interpret the provision as it stands treating it to be valid and intra vires. If it is so, the limited controversy before the Court is whether the University is right in interpreting the relevant provision of law in Section 99 read with G Section 2 of the Act.