docs: public static String getKeyManagerFactoryAlgorithm() {
          if (keyManagerFactoryAlgorithm == null) {
              keyManagerFactoryAlgorithm = AccessController.doPrivileged(new PrivilegedAction<String>() {
                  @Override
                  public String run() {
                      return Security.getProperty("ssl.KeyManagerFactory.algorithm");
                  }
              });
          }
  
          return keyManagerFactoryAlgorithm;
      }