public void RequestCreateItem(LLUUID parentFolder, string name, string description, AssetType type, 
            InventoryType invType, WearableType wearableType, PermissionMask nextOwnerMask, 
            ItemCreatedCallback callback)
        {
            CreateInventoryItemPacket create = new CreateInventoryItemPacket();
            create.AgentData.AgentID = _Client.Self.AgentID;
            create.AgentData.SessionID = _Client.Self.SessionID;

            create.InventoryBlock.CallbackID = RegisterItemCreatedCallback(callback);
            create.InventoryBlock.FolderID = parentFolder;
            create.InventoryBlock.TransactionID = LLUUID.Random();
            create.InventoryBlock.NextOwnerMask = (uint)nextOwnerMask;
            create.InventoryBlock.Type = (sbyte)type;
            create.InventoryBlock.InvType = (sbyte)invType;
            create.InventoryBlock.WearableType = (byte)wearableType;
            create.InventoryBlock.Name = Helpers.StringToField(name);
            create.InventoryBlock.Description = Helpers.StringToField(description);

            _Client.Network.SendPacket(create);
        }

        private uint RegisterItemCreatedCallback(ItemCreatedCallback callback)
        {
            lock (_CallbacksLock)
            {
                if (_CallbackPos == UInt32.MaxValue)
                    _CallbackPos = 0;

                _CallbackPos++;

                if (_ItemCreatedCallbacks.ContainsKey(_CallbackPos))
                    _Client.Log("Overwriting an existing ItemCreatedCallback", Helpers.LogLevel.Warning);

                _ItemCreatedCallbacks[_CallbackPos] = callback;

                return _CallbackPos;
            }
        }

        /// <summary>
        /// Creates inventory link to another inventory item or folder
        /// </summary>
        /// <param name="folderID">Put newly created link in folder with this UUID</param>
        /// <param name="itemID">Original item's UUID</param>
        /// <param name="name">Name</param>
        /// <param name="description">Description</param>
        /// <param name="assetType">Asset Type</param>
        /// <param name="invType">Inventory Type</param>
        /// <param name="transactionID">Transaction UUID</param>
        /// <param name="callback">Method to call upon creation of the link</param>
        public void CreateLink(UUID folderID, UUID itemID, string name, string description, AssetType assetType, InventoryType invType, UUID transactionID, ItemCreatedCallback callback)
        {
            LinkInventoryItemPacket create = new LinkInventoryItemPacket();
            create.AgentData.AgentID = Client.Self.AgentID;
            create.AgentData.SessionID = Client.Self.SessionID;

            create.InventoryBlock.CallbackID = RegisterItemCreatedCallback(callback);
            create.InventoryBlock.FolderID = folderID;
            create.InventoryBlock.TransactionID = transactionID;
            create.InventoryBlock.OldItemID = itemID;
            create.InventoryBlock.Type = (sbyte)assetType;
            create.InventoryBlock.InvType = (sbyte)invType;
            create.InventoryBlock.Name = Utils.StringToBytes(name);
            create.InventoryBlock.Description = Utils.StringToBytes(description);
            
            Client.Network.SendPacket(create);
        }

        /// <summary>
        /// Creates a wearable inventory item referencing an asset upload. 
        /// Second Life v1.9 uses this method to create wearable inventory items.
        /// </summary>
        /// <param name="parentFolder"></param>
        /// <param name="name"></param>
        /// <param name="description"></param>
        /// <param name="type"></param>
        /// <param name="wearableType"></param>
        /// <param name="invType"></param>
        /// <param name="nextOwnerMask"></param>
        /// <param name="callback"></param>
        /// <param name="assetTransactionID">Proper use is to upload the inventory's asset first, then provide the Asset's TransactionID here.</param>
        public void RequestCreateItem(UUID parentFolder, string name, string description, AssetType type, UUID assetTransactionID,
            InventoryType invType, WearableType wearableType, PermissionMask nextOwnerMask, ItemCreatedCallback callback)
        {
            CreateInventoryItemPacket create = new CreateInventoryItemPacket();
            create.AgentData.AgentID = _Agents.AgentID;
            create.AgentData.SessionID = _Agents.SessionID;

            create.InventoryBlock.CallbackID = RegisterItemCreatedCallback(callback);
            create.InventoryBlock.FolderID = parentFolder;
            create.InventoryBlock.TransactionID = assetTransactionID;
            create.InventoryBlock.NextOwnerMask = (uint)nextOwnerMask;
            create.InventoryBlock.Type = (sbyte)type;
            create.InventoryBlock.InvType = (sbyte)invType;
            create.InventoryBlock.WearableType = (byte)wearableType;
            create.InventoryBlock.Name = Utils.StringToBytes(name);
            create.InventoryBlock.Description = Utils.StringToBytes(description);

            _Network.SendPacket(create);
        }