def refresh_token_expiration_time(self, token_id): raise exception.NotImplemented()
def gen_token_id(self, token_data): raise exception.NotImplemented()
def get_token(self, token_id): raise exception.NotImplemented()
def delete_token(self, token_id): raise exception.NotImplemented()
def create_token(self, token_id, data): raise exception.NotImplemented()
def validate_user(self, username, password): raise exception.NotImplemented()
def enforce(self, credentials, action, target): raise exception.NotImplemented()