# File lib/fog/identity/openstack/v3/models/roles.rb, line 23
          def find_by_id(id)
            cached_role = find { |role| role.id == id }
            return cached_role if cached_role
            role_hash = service.get_role(id).body['role']
            Fog::Identity::OpenStack::V3.role.new(
              role_hash.merge(:service => service)
            )
          end