 Complete the following phrase:  Mafi was appointed coadjutor bishop of Tonga in June 2007 and was consecrated bishop in that year. When he succeeded Bishop Soane Lilo Foliaki as Bishop of Tonga on 18 April 2008, he became the first diocesan priest to be bishop of the diocese of Tonga. His three predecessors were members of the Society of Mary. He participated in the 