docs: protected KeyManager[] createKeyManagers(boolean startup) throws NoSuchAlgorithmException, UnrecoverableKeyException, KeyStoreException {
          KeyStore keyStore = loadKeyStore(startup);
          if(keyStore == null && startup) {
              return null;
          }
  
          char[] keyPass = resolveKeyPassword();
          if (keyPass == null) keyPass = resolveKeystorePassword();
  
          KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
          keyManagerFactory.init(keyStore, keyPass);
  
          return keyManagerFactory.getKeyManagers();
      }