val root =
      HeldCertificate.Builder()
        .certificateAuthority(0)
        .rsa2048()
        .build()
    val leaf =
      HeldCertificate.Builder()
        .certificateAuthority(0)
        .ecdsa256()
        .signedBy(root)
        .build()
    assertThat(root.certificate.sigAlgName).isEqualTo("SHA256WITHRSA", ignoreCase = true)
    assertThat(leaf.certificate.sigAlgName).isEqualTo("SHA256WITHRSA", ignoreCase = true)

	public final fun commonName (Ljava/lang/String;)Lokhttp3/tls/HeldCertificate$Builder;
	public final fun duration (JLjava/util/concurrent/TimeUnit;)Lokhttp3/tls/HeldCertificate$Builder;
	public final fun ecdsa256 ()Lokhttp3/tls/HeldCertificate$Builder;
	public final fun keyPair (Ljava/security/KeyPair;)Lokhttp3/tls/HeldCertificate$Builder;

    private var signedBy: HeldCertificate? = null
    private var maxIntermediateCas = -1
    private var keyAlgorithm: String? = null
    private var keySize: Int = 0

    init {
      ecdsa256()
    }

    /**
     * Sets the certificate to be valid in ```[notBefore..notAfter]```. Both endpoints are specified
     * in the format of [System.currentTimeMillis]. Specify -1L for both values to use the default

  }

  @Test
  fun `EC issuer and signature`() {
    val root =
      HeldCertificate.Builder()
        .certificateAuthority(0)
        .ecdsa256()
        .build()
    val certificate =
      HeldCertificate.Builder()
        .signedBy(root)
        .ecdsa256()
        .build()

    val certificateByteString = certificate.certificate.encoded.toByteString()

    // Valid signature.

    builder = builder.keyPair(keyPair.public, keyPair.private)
    builder = builder.signedBy(HeldCertificate.Builder().build())
    builder = builder.certificateAuthority(0)
    builder = builder.ecdsa256()
    builder = builder.rsa2048()
    val heldCertificate: HeldCertificate = builder.build()
  }

  @Test
  fun javaNetAuthenticator() {
    val authenticator = JavaNetAuthenticator()