def validate_refresh_token(self, refresh_token, client, request, *args, **kwargs):
        raise NotImplementedError('Subclasses must implement this method.')
Ensure the Bearer token is valid and authorized access to scopes.
dataset/ETHPy150Open idan/oauthlib/oauthlib/oauth2/rfc6749/request_validator.py/RequestValidator.validate_refresh_token