@property<EOL><INDENT>def refresh_token(self):<DEDENT>
return self._refresh_token<EOL>
Gets the refresh_token of this ObtainTokenResponse.
A refresh token. For more information, see [OAuth access token management](/authz/oauth/how-it-works#oauth-access-token-management).

:return: The refresh_token of this ObtainTokenResponse.
:rtype: str