title: Default value for grails.json.legacy.builder in Grails 2.5.0
body: <p>What is the default value for grails.json.legacy.builder in Grails 2.5.0?</p>
  
  <p>The <a href="https://grails.github.io/grails-doc/2.5.0/guide/theWebLayer.html#moreOnJSONBuilder" rel="nofollow">Grails 2.5.0 docs</a> say that it should be set to <code>false</code> in Config.groovy to use the "new" <code>JsonBuilder</code>.</p>
  
  <p>However, the  "new" <code>JsonBuilder</code> was introduced in Grails 1.2, which was a long time ago, so I can't imagine that the current default would be <code>true</code>.</p>
  
  <p>I searched the Grails code for usages of this property, by couldn't find any.  This property might not even be used anymore, despite still being in the docs.</p>