// Overriding Authenticator *********************************************
protected PasswordAuthentication getPasswordAuthentication() {
Credentials c = CredentialsStore.INSTANCE.getCredentials(getRequestingPrompt(), getRequestingHost());
Message.debug("authentication: k='"+Credentials.buildKey(getRequestingPrompt(), getRequestingHost())+"' c='" + c + "'");
return c != null ? new PasswordAuthentication(c.getUserName(), c.getPasswd().toCharArray()) : null;
}