private val optionsType =
  Options.of(
    // 0.
    "deviation ".encodeUtf8(),
    // 1.
    "disallowed ".encodeUtf8(),
    // 2.
    "disallowed_STD3_mapped ".encodeUtf8(),
    // 3.
    "disallowed_STD3_valid ".encodeUtf8(),
    // 4.
    "ignored ".encodeUtf8(),
    // 5.
    "mapped ".encodeUtf8(),
    // 6.
    "valid ".encodeUtf8(),
  )

internal const val TYPE_DEVIATION = 0