internal bool SubmitUpdateProperties(SteamInventoryUpdateHandle_t handle, ref SteamInventoryResult_t pResultHandle)
        {
            var returnValue = _SubmitUpdateProperties(Self, handle, ref pResultHandle);

            return(returnValue);
        }
        internal bool SetProperty(SteamInventoryUpdateHandle_t handle, InventoryItemId nItemID, [MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(Utf8StringToNative))] string pchPropertyName, float flValue)
        {
            var returnValue = _SetProperty(Self, handle, nItemID, pchPropertyName, flValue);

            return(returnValue);
        }
 private static extern bool _SubmitUpdateProperties(IntPtr self, SteamInventoryUpdateHandle_t handle, ref SteamInventoryResult_t pResultHandle);
 private static extern bool _SetProperty(IntPtr self, SteamInventoryUpdateHandle_t handle, InventoryItemId nItemID, [MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(Utf8StringToNative))] string pchPropertyName, float flValue);