D-Programming-Language/phobos — pull request #1916 by repeatedly (2014-02-09 14:31:32+00:00)
Title: Add ref to array() and object() of JSONValue getters to add new element

Continuation of https://github.com/D-Programming-Language/phobos/pull/1421

New JSONValue API can't add new element to array or object directly.
Making array / object getter ref fuction fix this problem.