internal static protected void LoadElementExtensions(XmlReader reader, SyndicationFeed feed, int maxExtensionSize)
 {
     if (feed == null)
     {
         throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("feed");
     }
     feed.LoadElementExtensions(reader, maxExtensionSize);
 }
 internal static protected void LoadElementExtensions(XmlReader reader, SyndicationFeed feed, int maxExtensionSize)
 {
     if (feed == null)
     {
         throw new ArgumentNullException(nameof(feed));
     }
     feed.LoadElementExtensions(reader, maxExtensionSize);
 }
 internal static void LoadElementExtensions(XmlBuffer buffer, XmlDictionaryWriter writer, SyndicationFeed feed)
 {
     if (feed == null)
     {
         throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("feed");
     }
     CloseBuffer(buffer, writer);
     feed.LoadElementExtensions(buffer);
 }
        internal static void LoadElementExtensions(XmlBuffer buffer, XmlDictionaryWriter writer, SyndicationFeed feed)
        {
            if (feed == null)
            {
                throw new ArgumentNullException(nameof(feed));
            }

            CloseBuffer(buffer, writer);
            feed.LoadElementExtensions(buffer);
        }