if (service != null)return service;
String login = getGmailLogin();
String psswd = getGmailPassword();
if (login == null)throw new ArgumentNotSetException("gmailLogin");
if (psswd == null)throw new ArgumentNotSetException("gmailPassword");
service = new BloggerService(getAppName());
try {
service.setUserCredentials(login, psswd);
} catch (AuthenticationException ex) {
throw new Error(ex.getMessage(),ex);
}