mainContent: null → { "slideshow": { "author": "Yours Truly", "date": "date of publication", "slides": [ { "title": "Wake up to WonderWidgets!", "type": "all" }, { "items": [ "Why WonderWidgets are great", "Who buys WonderWidgets" ], "title": "Overview", "type": "all" } ], "title": "Sample Slide Show" } }

mainContent changed from null to { "slideshow": { "author": "Yours Truly", "date": "date of publication", "slides": [ { "title": "Wake up to WonderWidgets!", "type": "all" }, { "items": [ "Why WonderWidgets are great", "Who buys WonderWidgets" ], "title": "Overview", "type": "all" } ], "title": "Sample Slide Show" } }