University of Stellenbosch Legal Aid Clinic and Others v Minister of Justice and Correctional Services and Others; Association of Debt Recovery Agents NPC v University of Stellenbosch Legal Aid Clinic and Others; Mavava Trading 279 (Pty) Ltd and Others v University of Stellenbosch Legal Aid Clinic and Others (CCT127/15) [2016] ZACC 32; 2016 (6) SA 596 (CC); (2016) 37 ILJ 2730 (CC); 2016 (12) BCLR 1535 (CC) (13 September 2016)