}
		if s := env.Get(EnvKESAPIKey, ""); s != "" {
			key, err := kes.ParseAPIKey(s)
			if err != nil {
				return nil, err
			}

			cert, err := kes.GenerateCertificate(key)
			if err != nil {
				return nil, err
			}
			conf.GetClientCertificate = func(*tls.CertificateRequestInfo) (*tls.Certificate, error) { return &cert, nil }
		} else {

          val bytes = Buffer()
          val certificateBytes = line.decodeBase64() ?: throw IOException("Corrupt certificate in cache entry")
          bytes.write(certificateBytes)
          result.add(certificateFactory.generateCertificate(bytes.inputStream()))
        }
        return result
      } catch (e: CertificateException) {
        throw IOException(e.message)
      }
    }

    @Throws(IOException::class)

    assertThat("www.nintendo.co.jp".canParseAsIpAddress()).isFalse()
  }

  private fun certificate(certificate: String): X509Certificate {
    return CertificateFactory.getInstance("X.509")
      .generateCertificate(ByteArrayInputStream(certificate.toByteArray()))
      as X509Certificate
  }

  private fun session(certificate: String): SSLSession = FakeSSLSession(certificate(certificate))