Penafsiran konstitusi berdasarkan Pancasila dengan pendekatan purposif Aharon Barak: Relevansinya dalam pengujian undang-undang terhadap UUD NRI tahun 1945 di Mahkamah Konstitusi Republik Indonesia periode 2015-2018 = Constitutional interpretation based on pancasila using Aharon Barak’s purposive approach: Relevancy in reviewing the law against the 1945 Constitution of the Republic of Indonesia in the Constitutional Court of the Republic of Indonesia during 2015-2018