@property
    def www_authenticate(self):
        def on_update(www_auth):
            if not www_auth and 'www-authenticate' in self.headers:
                del self.headers['www-authenticate']
            elif www_auth:
                self.headers['WWW-Authenticate'] = www_auth.to_header()
        header = self.headers.get('www-authenticate')
        return parse_www_authenticate_header(header, on_update)
The `WWW-Authenticate` header in a parsed form.
dataset/ETHPy150Open Eforcers/gae-flask-todo/lib/werkzeug/wrappers.py/WWWAuthenticateMixin.www_authenticate