def get_rsa_key(self, client_key, request):
        raise NotImplementedError("Subclasses must implement this function.")
Make sure hosts defined in env.roles are cleaned of extra spaces
dataset/ETHPy150Open idan/oauthlib/oauthlib/oauth1/rfc5849/request_validator.py/RequestValidator.get_rsa_key--crossover with--dataset/ETHPy150Open fabric/fabric/tests/test_main.py/test_roles_stripped_env_hosts