int DokanOperations.GetDiskFreeSpace(
            ref ulong freeBytesAvailable,
            ref ulong totalBytes,
            ref ulong totalFreeBytes,
            DokanFileInfo info)
        {
            ulong diskFreeBytes  = DiskFreeSpace.Get(mLocalFilesPath);
            ulong controlledSize = WalkTree.GetTotalSize(GetRoot());

            freeBytesAvailable = diskFreeBytes - controlledSize;
            totalBytes         = diskFreeBytes;
            totalFreeBytes     = diskFreeBytes - controlledSize;

            return(0);
        }