Analisis yuridis kedudukan kreditur separatis pemegang jaminan fidusia dalam keadaan debitur pailit (Studi kasus Putusan Mahkamah Agung No. 306 K/PDT.SUS/2010) = Legal analysis of fiduciary secured creditor in case of debtors bankruptcy (Case studies of Putusan Mahkamah Agung No. 306 K/PDT.SUS/2010)