val adapter = Adapters.INTEGER_AS_LONG.asSequenceOf()
    assertThat(adapter.fromDer(bytes)).isEqualTo(sequenceOf)
    assertThat(adapter.toDer(sequenceOf)).isEqualTo(bytes)
  }

  @Test fun `point with only x set`() {
    val bytes = "3003800109".decodeHex()
    val point = Point(9L, null)
    assertThat(Point.ADAPTER.fromDer(bytes)).isEqualTo(point)
    assertThat(Point.ADAPTER.toDer(point)).isEqualTo(bytes)
  }

   *
   * If there's nothing to read and no default value, this will throw an exception.
   */
  fun fromDer(reader: DerReader): T

  fun fromDer(byteString: ByteString): T {
    val buffer = Buffer().write(byteString)
    val reader = DerReader(buffer)
    return fromDer(reader)
  }

  /**
   * Writes [value] to this adapter, unless it is the default value and can be safely omitted.
   *

      CertificateAdapters.certificate
        .fromDer(certificateByteString)

    assertThat(okHttpCertificate.tbsCertificate.subjectPublicKeyInfo.subjectPublicKey)
      .isEqualTo(BitString(publicKeyBytes, 0))
  }

  @Test fun `time before 2050 uses UTC_TIME`() {
    val utcTimeDer = "170d3439313233313233353935395a".decodeHex()

    val decoded = CertificateAdapters.time.fromDer(utcTimeDer)

bnr.la

// Bitbucket : http://bitbucket.org
// Submitted by Andy Ortlieb <******@****.***>
bitbucket.io

// Blackbaud, Inc. : https://www.blackbaud.com
// Submitted by Paul Crowder <paul.crowder@blackbaud.com>
blackbaudcdn.net

// Blatech : http://www.blatech.net
// Submitted by Luke Bratch <******@****.***>
of.je

// Blue Bite, LLC : https://bluebite.com

      encodeBase64Lines(pkcs1Bytes())
      append("-----END RSA PRIVATE KEY-----\n")
    }
  }

  private fun pkcs1Bytes(): ByteString {
    val decoded = CertificateAdapters.privateKeyInfo.fromDer(keyPair.private.encoded.toByteString())
    return decoded.privateKey
  }

  /** Build a held certificate with reasonable defaults. */
  class Builder {
    private var notBefore = -1L

) : DerAdapter<T> {
  init {
    require(tagClass >= 0)
    require(tag >= 0)
  }

  override fun matches(header: DerHeader): Boolean = header.tagClass == tagClass && header.tag == tag

  override fun fromDer(reader: DerReader): T {
    val peekedHeader = reader.peekHeader()
    if (peekedHeader == null || peekedHeader.tagClass != tagClass || peekedHeader.tag != tag) {
      if (isOptional) return defaultValue as T

          else -> writer.writeOctetString(value as ByteString)
        }
      }

      override fun fromDer(reader: DerReader): Any? {
        val adapter = chooser(reader.typeHint) as DerAdapter<Any?>?
        return when {
          adapter != null -> adapter.fromDer(reader)
          else -> reader.readUnknown()
        }
      }
    }
  }

  /**

      }

      override fun fromDer(reader: DerReader): Long {
        val peekHeader =
          reader.peekHeader()
            ?: throw ProtocolException("expected time but was exhausted at $reader")

        return when {
          peekHeader.tagClass == Adapters.UTC_TIME.tagClass &&
            peekHeader.tag == Adapters.UTC_TIME.tag -> {
            Adapters.UTC_TIME.fromDer(reader)
          }