I can answer that.
I would like to begin by specifying that the law—chapter 22 of the Statutes of Canada, 2011—talks about that provision. That provision was used again because there was uncertainty over whether Bill C-15 and Bill C-16 should be introduced at the same time.
To answer your question more specifically, I would say that, in proposed subsection 165.21(4), two circumstances are set out—the judge's request, or the attainment of the age of 60 years. Subsection 165.21(5) talks about how to deal with resignations. The legislation overlaps simply to cover both possibilities.