Keabsahan Dan Tanggung Jawab Notaris Terhadap Akta Berita Acara Rapat Umum Pemegang Saham Luar Biasa Pada PT BPM Berdasarkan Irrevocable Power Of Attorney (Studi Putusan Mahkamah Agung Nomor 1580 K/Pdt/2018) = The Validity and Responsibility of Notary to the Deed of Minutes of the Extraordinary General Meeting of Shareholders at PT BPM Based On Irrevocable Power Of Attorney (Study of Supreme Court Decision Number 1580 K/Pdt/2018)