Where is PagedCollectionView in Silverlight 5?

Where is PagedCollectionView in Silverlight 5? I'm trying to convert a SL3 app to 5 but can't find PagedCollectionView.

Solution

It is on System.Windows.Data (C:\Program Files (x86)\MicrosoftSDKs\Silverlight\v5.0\Libraries\Client\System.Windows.Data.dll)

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