Keabsahan Akta Jual Beli Tanah Yang Objeknya Sudah Terikat Dengan Perjanjian Pengikatan Jual Beli Tanah Pihak Lain (Studi Putusan Mahkamah Agung Nomor 7 PK/Pdt/2022)” = The validity of the deed of sale and purchase of land whose object has been tied to the agreement of sale and purchase of land by another party (STUDY OF THE DECISION OF THE AGUNG COURT NUMBER 7 PK / Pdt / 2022)