}
    return trustManagers[0] as X509TrustManager
  }

  override fun trustManager(sslSocketFactory: SSLSocketFactory): X509TrustManager =
    throw UnsupportedOperationException(
      "clientBuilder.sslSocketFactory(SSLSocketFactory) not supported with OpenJSSE",
    )

  override fun configureTlsExtensions(
    sslSocket: SSLSocket,
    hostname: String?,