* ```
   *
   * TODO(jwilson): constrain to printable string characters.
   */
  val PRINTABLE_STRING =
    BasicDerAdapter(
      name = "PRINTABLE STRING",
      tagClass = DerHeader.TAG_CLASS_UNIVERSAL,
      tag = 19L,
      codec =
        object : BasicDerAdapter.Codec<String> {
          override fun decode(reader: DerReader): String = reader.readUtf8String()

          override fun encode(