@role_ref.setter<EOL><INDENT>def role_ref(self, role_ref):<DEDENT>
if role_ref is None:<EOL><INDENT>raise ValueError("<STR_LIT>")<EOL><DEDENT>self._role_ref = role_ref<EOL>
Sets the role_ref of this V1alpha1ClusterRoleBinding.
RoleRef can only reference a ClusterRole in the global namespace. If the RoleRef cannot be resolved, the Authorizer must return an error.

:param role_ref: The role_ref of this V1alpha1ClusterRoleBinding.
:type: V1alpha1RoleRef