code: public void apply(SSLSocket sslSocket, boolean isFallback) {
      ConnectionSpec specToApply = supportedSpec(sslSocket, isFallback);
  
      sslSocket.setEnabledProtocols(specToApply.tlsVersions);
  
      String[] cipherSuitesToEnable = specToApply.cipherSuites;
      // null means "use default set".
      if (cipherSuitesToEnable != null) {
        sslSocket.setEnabledCipherSuites(cipherSuitesToEnable);
      }
    }
docs: Applies this spec to {@code sslSocket}.