RestKit/RestKit — pull request #2048 by cfis (2014-10-15 07:00:32+00:00)
Title: Converting Collection to Single Class

RKMappingOperation supports converting a single object to a collection. This patch does the reverse, it supports converting a collection into a single object.

I know this probably sounds weird, but in our app we do in fact have a case where this was needed. We wanted to convert a collection of 1 object into a has_one association.