@property<EOL><INDENT>def api_version(self):<DEDENT>
return self._api_version<EOL>
Gets the api_version of this V1alpha1Subject.
APIVersion holds the API group and version of the referenced subject. Defaults to \"v1\" for ServiceAccount subjects. Defaults to \"rbac.authorization.k8s.io/v1alpha1\" for User and Group subjects.

:return: The api_version of this V1alpha1Subject.
:rtype: str