@classmethod
def register(cls, pkg, mgr):
    """Class method used internally by the Jetfactory manager to register a Service

        :param pkg: instance of :class:`jetfactory.Jetpack`
        :param mgr: instance of :class:`Jetfactory.JetManager`
        """
    cls.loop = mgr.loop
    cls.app = mgr.sanic
    cls._pkg_bind(pkg)
