def METHOD_NAME(self, verifier=None):
    """After user has authorized the app, get access token and secret with
    verifier
    """
    try:
        url = self._get_oauth_url('access_token')
        self.oauth = OAuth1Session(
            self.consumer_key, client_secret=self.consumer_secret,
            resource_owner_key=self.request_token['oauth_token'],
            resource_owner_secret=self.request_token['oauth_token_secret'],
            verifier=verifier, callback_uri=self.callback
        )
        resp = self.oauth.fetch_access_token(url)
        self.access_token = resp['oauth_token']
        self.access_token_secret = resp['oauth_token_secret']
        return self.access_token, self.access_token_secret
    except Exception as e:
        raise TweepyException(e)