playframework/playframework — pull request #2111 by filosganga (2013-12-01 21:12:46+00:00)
Title: Adds set repeated mapping

In the Forms there are list and seq to define a repeated mapping, but not set. Altought HTTP request doesn't permit to have a set, it can contains repetitions and the order is preserved, it is very common to have a data object having a member with Set semantic instead.