Perlindungan hukum bagi penerima fidusia terhadap objek jaminan fidusia yang mendapat perlawanan dari pihak ketiga berdasarkan Undang-Undang Nomor 42 Tahun 1999 Tentang Jaminan Fidusia (Studi kasus: Putusan Mahkamah Agung RI no. 319 PK/PDT/2015) = Legal protection for fiduciary right beneficiary acceptor against fiduciary collateral object in case of third party's attack based on Act Number 42 Year 1999 Concering Fiduciary Warranty: A case studi on Supreme Court's Decision 319 PK/PDT/2015)