docs: public synchronized void persist() throws KeyStoreException, NoSuchAlgorithmException, CertificateException {
  		try
  		{
  			FileOutputStream kso = new FileOutputStream(new File(root, _caPrivateKeystore));
  			_ks.store(kso, _keystorepass);
  			kso.flush();
  			kso.close();
  			persistCertMap();
  			persistSubjectMap();
  			persistKeyPairMap();
  			persistPublicKeyMap();
  		}
  		catch(IOException ioe)
  		{
  			ioe.printStackTrace();
  		}
  	}