@Test fun `encode primitive string`() {
    val buffer = Buffer()
    val derWriter = DerWriter(buffer)

    derWriter.write("test", tagClass = DerHeader.TAG_CLASS_UNIVERSAL, tag = 26L) {
      derWriter.writeOctetString("Jones".encodeUtf8())
    }

    assertThat(buffer.readByteString()).isEqualTo("1A054A6F6E6573".decodeHex())
  }

  @Test fun `decode implicit prefixed type`() {
    // Type1 ::= VisibleString

    }
  }

  fun writeBitString(bitString: BitString) {
    val sink = sink()
    sink.writeByte(bitString.unusedBitsCount)
    sink.write(bitString.byteString)
  }

  fun writeOctetString(byteString: ByteString) {
    sink().write(byteString)
  }

  fun writeUtf8(value: String) {
    sink().writeUtf8(value)
  }

  fun writeObjectIdentifier(s: String) {