logoff method

Implementation

Future<bool> logoff() async {
  // clear system token
  _jwt = null;
  _token.set(null);

  // set connected = true
  _connected.set(false);

  // clear claims
  _claims.forEach((key, observable) => observable.set(null));

  // clear language
  _language.set(Phrases.english);

  // clear rights
  _rights.set(0);

  // set phrase language
  phrase.language = Phrases.english;

  return false;
}