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Image field does not contain a dictionary

I am trying to prepare one of the changes to the roadmap ( http://developers.facebook.com/roadmap/ )

"A connection to a picture / field can return a dictionary. We will start returning a dictionary containing url, height, width and is_silhouette fields when accessing the connection / picture for the object and specifying a callback property, redirect = false or getting the image field as part of a larger JSON response. "

I turned on migration in the settings of my application. So far, I have not been able to get an answer containing a dictionary in the image field. I tested "me / home", which should qualify as a larger JSON response, and I also tested using callback and redirect options.

Other ideas or examples of calls that return a dictionary in the image field?

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In the example, using the connection of the image to the profile of the public page with "redirect = false", the dictionary for the page is returned. The image used for the page, which I would suggest, is not large enough to have several sizes, but the dictionary returns "is_silhouette": false.

see https://developers.facebook.com/tools/explorer?method=GET&path=anotherfeed%2Fpicture%3Fredirect%3Dfalse

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