code: func (ca *CertAuthorityV2) CombinedMapping() RoleMap {
  	if len(ca.Spec.Roles) != 0 {
  		return RoleMap([]RoleMapping{{Remote: Wildcard, Local: ca.Spec.Roles}})
  	}
  	return RoleMap(ca.Spec.RoleMap)
  }
docs: // CombinedMapping is used to specify combined mapping from legacy property Roles
  // and new property RoleMap