// Test setup fails on JDK9
    // java.security.KeyStoreException: Certificate chain is not valid
    // at sun.security.pkcs12.PKCS12KeyStore.setKeyEntry
    // http://openjdk.java.net/jeps/229
    // http://hg.openjdk.java.net/jdk9/jdk9/jdk/file/2c1c21d11e58/src/share/classes/sun/security/pkcs12/PKCS12KeyStore.java#l596
    val keystoreType = if (platform.isJdk9()) "JKS" else null

  /**
   * As described in <a href="https://www.rsa.com/rsalabs/node.asp?id=2138">PKCS #12: Personal
   * Information Exchange Syntax Standard</a>, PKCS #12 defines an archive file format for storing
   * many cryptography objects as a single file.
   *
   * @since 15.0
   */
  public static final MediaType KEY_ARCHIVE = createConstant(APPLICATION_TYPE, "pkcs12");

  /**

    }
  }

  /**
   * Returns the RSA private key encoded in [PKCS #1][rfc_8017] [PEM format][rfc_7468].
   *
   * [rfc_8017]: https://tools.ietf.org/html/rfc8017
   * [rfc_7468]: https://tools.ietf.org/html/rfc7468
   */
  fun privateKeyPkcs1Pem(): String {
    check(keyPair.private is RSAPrivateKey) { "PKCS1 only supports RSA keys" }
    return buildString {

## Version 4.2.0

_2019-09-10_

 *  New: API to decode a certificate and private key to create a `HeldCertificate`. This accepts a
    string containing both a certificate and PKCS #8-encoded private key.

    ```kotlin
    val heldCertificate = HeldCertificate.decode("""
        |-----BEGIN CERTIFICATE-----
        |MIIBYTCCAQegAwIBAgIBKjAKBggqhkjOPQQDAjApMRQwEgYDVQQLEwtlbmdpbmVl