/// <summary>
        /// Initializes a new instance of KeyDescriptor from the specified attribute during a KeysMeta
        /// initializes itself using reflection.
        /// </summary>
        public KeyDescriptor(KeyInfoAttribute attribute)
        {
            _version    = attribute.Version;
            _keyType    = attribute.KeyType;
            _fixedValue = attribute.FixedValue;
            _objectType = attribute.ObjectType;

            if (_version == "")
            {
                _version = "1.0";
            }
        }
        public DictionaryMeta(Type type)
        {
            //#if (NETFX_CORE && DEBUG) || CORE
            //            if (type == typeof(PdfPages.Keys))
            //            {
            //                var x = typeof(PdfPages).GetRuntimeFields();
            //                var y = typeof(PdfPages).GetTypeInfo().DeclaredFields;
            //                x.GetType();
            //                y.GetType();
            //                Debug-Break.Break();
            //                Test.It();
            //            }
            //#endif
#if !NETFX_CORE && !UWP && !PORTABLE
            FieldInfo[] fields = type.GetFields(BindingFlags.Public | BindingFlags.Static | BindingFlags.FlattenHierarchy);
            foreach (FieldInfo field in fields)
            {
                object[] attributes = field.GetCustomAttributes(typeof(KeyInfoAttribute), false);
                if (attributes.Length == 1)
                {
                    KeyInfoAttribute attribute  = (KeyInfoAttribute)attributes[0];
                    KeyDescriptor    descriptor = new KeyDescriptor(attribute);
                    descriptor.KeyValue = (string)field.GetValue(null);
                    _keyDescriptors[descriptor.KeyValue] = descriptor;
                }
            }
#else
            // Rewritten for WinRT.
            CollectKeyDescriptors(type);
            //var fields = type.GetRuntimeFields();  // does not work
            //fields2.GetType();
            //foreach (FieldInfo field in fields)
            //{
            //    var attributes = field.GetCustomAttributes(typeof(KeyInfoAttribute), false);
            //    foreach (var attribute in attributes)
            //    {
            //        KeyDescriptor descriptor = new KeyDescriptor((KeyInfoAttribute)attribute);
            //        descriptor.KeyValue = (string)field.GetValue(null);
            //        _keyDescriptors[descriptor.KeyValue] = descriptor;
            //    }
            //}
#endif
        }