internal static ItemType InferItemType(XPathNavigator item)
        {
            string value;

            if (item.TryGetAttribute("nil", Framework.Common.XSI.Namespace, out value) && XmlConvert.ToBoolean(value))
            {
                return ItemType.Property;
            }

            if (item.HasAttribute("key", Framework.Common.SData.Namespace) ||
                item.HasAttribute("uuid", Framework.Common.SData.Namespace) ||
                item.HasAttribute("lookup", Framework.Common.SData.Namespace) ||
                item.HasAttribute("descriptor", Framework.Common.SData.Namespace))
            {
                return ItemType.Object;
            }

            if (item.HasAttribute("url", Framework.Common.SData.Namespace) ||
                item.HasAttribute("uri", Framework.Common.SData.Namespace) ||
                item.HasAttribute("deleteMissing", Framework.Common.SData.Namespace))
            {
                return ItemType.PayloadCollection;
            }

            if (item.IsEmptyElement)
            {
                // workaround: Older versions of the SIF generate payload collections as empty namespace-less elements
                return string.IsNullOrEmpty(item.NamespaceURI) ? ItemType.PayloadCollection : ItemType.Property;
            }

            var children = item.SelectChildren(XPathNodeType.Element).Cast<XPathNavigator>();
            var childCount = children.Count();

            if (childCount == 0)
            {
                return ItemType.Property;
            }

            if (childCount > 1 && children.Select(child => child.LocalName).Distinct().Count() == 1)
            {
                if (children.All(child => InferItemType(child) == ItemType.Object))
                {
                    return ItemType.PayloadCollection;
                }
                if (children.All(child => InferItemType(child) == ItemType.Property))
                {
                    return ItemType.SimpleCollection;
                }
            }

            return ItemType.Object;
        }
        internal static ItemType InferItemType(XPathNavigator item)
        {
            string value;

            if (item.TryGetAttribute("nil", Framework.Common.XSI.Namespace, out value) && XmlConvert.ToBoolean(value))
            {
                return ItemType.Property;
            }

            if (item.HasAttribute("key", Framework.Common.SData.Namespace) ||
                item.HasAttribute("uuid", Framework.Common.SData.Namespace) ||
                item.HasAttribute("lookup", Framework.Common.SData.Namespace) ||
                item.HasAttribute("descriptor", Framework.Common.SData.Namespace))
            {
                return ItemType.Object;
            }

            if (item.HasAttribute("url", Framework.Common.SData.Namespace) ||
                item.HasAttribute("deleteMissing", Framework.Common.SData.Namespace) ||
                item.IsEmptyElement)
            {
                return ItemType.PayloadCollection;
            }

            var children = item.SelectChildren(XPathNodeType.Element).Cast<XPathNavigator>();
            var childCount = children.Count();

            if (childCount == 0)
            {
                return ItemType.Property;
            }

            if (children.Select(child => child.LocalName).Distinct().Count() == 1 &&
                children.All(child => InferItemType(child) == ItemType.Object))
            {
                return ItemType.PayloadCollection;
            }

            if (children.Select(child => child.LocalName).Distinct().Count() == 1 &&
                children.All(child => InferItemType(child) == ItemType.Property))
            {
                return ItemType.SimpleCollection;
            }

            return ItemType.Object;
        }