public PrivateKey getPrivateKey(String alias) {
   return keyManager.getPrivateKey(alias);
 }
 public X509Certificate[] getCertificateChain(String alias) {
   return keyManager.getCertificateChain(alias);
 }
 public String chooseClientAlias(String[] keyType, Principal[] issuers, Socket socket) {
   if (authType == null) {
     return null;
   }
   return keyManager.chooseClientAlias(new String[] {authType}, issuers, socket);
 }
 public String chooseEngineClientAlias(String[] keyType, Principal[] issuers, SSLEngine engine) {
   if (authType == null) {
     return null;
   }
   return keyManager.chooseEngineClientAlias(new String[] {authType}, issuers, engine);
 }
 public String[] getClientAliases(String keyType, Principal[] issuers) {
   if (authType == null) {
     return null;
   }
   return keyManager.getClientAliases(authType, issuers);
 }