Pengalihan Hak Atas Tagih Piutang Secara Sepihak yang Menyebabkan Perbuatan Melawan Hukum Berdasarkan Akta Perjanjian Kredit (Studi Putusan Nomor 50/Pdt.G/2020/Pn.Bks) = Unilateral Transfer of Receivables Resulting in an Unlawful Act Based on a Credit Agreement Deed (A Study of Decision No. 50/PDT.G/2020/PN.BKS)