.add(server.hostName, pin(goodIntermediateCa.certificate))
        .build()
    val handshakeCertificates =
      HandshakeCertificates
        .Builder()
        .addTrustedCertificate(rootCa.certificate)
        .addTrustedCertificate(compromisedRootCa.certificate)
        .build()
    val client =
      clientTestRule
        .newClientBuilder()
        .sslSocketFactory(

to trust. In this simplified example we trust the server's self-signed certificate:

```java
HandshakeCertificates clientCertificates = new HandshakeCertificates.Builder()
    .addTrustedCertificate(localhostCertificate.certificate())
    .build();
OkHttpClient client = new OkHttpClient.Builder()
    .sslSocketFactory(clientCertificates.sslSocketFactory(), clientCertificates.trustManager())
    .build();
```

    val certificates =
      HandshakeCertificates
        .Builder()
        .addTrustedCertificate(letsEncryptCertificateAuthority)
        .addTrustedCertificate(entrustRootCertificateAuthority)
        .addTrustedCertificate(comodoRsaCertificationAuthority)
        // Uncomment if standard certificates are also required.
        // .addPlatformTrustedCertificates()

        .build()
    val server =
      HandshakeCertificates
        .Builder()
        .addTrustedCertificate(clientRoot.certificate)
        .heldCertificate(serverCertificate, serverIntermediate.certificate)
        .build()
    val client =
      HandshakeCertificates
        .Builder()
        .addTrustedCertificate(serverRoot.certificate)
        .heldCertificate(clientCertificate, clientIntermediate.certificate)

        .addSubjectAlternativeName("localhost")
        .build()
    val handshakeCertificates =
      HandshakeCertificates
        .Builder()
        .heldCertificate(heldCertificate)
        .addTrustedCertificate(heldCertificate.certificate)
        .build()

    client =
      client
        .newBuilder()
        .sslSocketFactory(
          handshakeCertificates.sslSocketFactory(),

        .addSubjectAlternativeName("url-host.com")
        .build()
    val handshakeCertificates =
      HandshakeCertificates
        .Builder()
        .heldCertificate(heldCertificate)
        .addTrustedCertificate(heldCertificate.certificate)
        .build()
    server.useHttps(handshakeCertificates.sslSocketFactory())

    val dns =
      Dns {
        Dns.SYSTEM.lookup(server.hostName)
      }

        .addSubjectAlternativeName("localhost.localdomain")
        .build()
    return@lazy HandshakeCertificates
      .Builder()
      .heldCertificate(heldCertificate)
      .addTrustedCertificate(heldCertificate.certificate)
      .build()
  }

  /** Returns an SSL client for this host's localhost address. */
  @JvmStatic
  fun localhost(): HandshakeCertificates = localhost

      val handshakeCertificates =
        HandshakeCertificates
          .Builder()
          // TODO reenable in official answers
//      .addPlatformTrustedCertificates()
          .addTrustedCertificate(cert)
          .build()

      clientBuilder
        .sslSocketFactory(
          handshakeCertificates.sslSocketFactory(),
          handshakeCertificates.trustManager,
        )
    }

          .commonName(hostname)
          .addSubjectAlternativeName(hostname)
          .build()
      HandshakeCertificates
        .Builder()
        .heldCertificate(heldCertificate)
        .addTrustedCertificate(heldCertificate.certificate)
        .build()
    }
  private var acceptedHostName: String? = null

  @StartStop
  private val server = MockWebServer()

  @BeforeEach
  fun setUp() {

    val heldCertificate: HeldCertificate = HeldCertificate.Builder().build()
    builder = builder.heldCertificate(heldCertificate, heldCertificate.certificate())
    builder = builder.addTrustedCertificate(heldCertificate.certificate())
  }

  @Test @Disabled
  fun heldCertificate() {
    val heldCertificate: HeldCertificate = HeldCertificate.Builder().build()