public static void Encrypt(String path)
{
if (path == null)
throw new ArgumentNullException(nameof(path));
// TODO: Not supported on Unix or in WinRt, and the EncryptFile API isn't currently
// available in OneCore. For now, we just throw PNSE everywhere. When the API is
// available, we can put this into the FileSystem abstraction and implement it
// properly for Win32.
throw new PlatformNotSupportedException();
}