@api_group.setter<EOL><INDENT>def api_group(self, api_group):<DEDENT>
if api_group is None:<EOL><INDENT>raise ValueError("<STR_LIT>")<EOL><DEDENT>self._api_group = api_group<EOL>
Sets the api_group of this V1alpha1RoleRef.
APIGroup is the group for the resource being referenced

:param api_group: The api_group of this V1alpha1RoleRef.
:type: str