namespace System.ServiceModel.Syndication
{
    [DataContract]
    [TypeForwardedFrom("System.ServiceModel.Web, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35")]
    public abstract class SyndicationFeedFormatter
    {
        protected internal static void WriteAttributeExtensions(XmlWriter writer, SyndicationItem item, string version);
    }
}