async def ListModels(self, tag):
        '''
        tag : str
        Returns -> typing.Sequence[~UserModel]
        '''
        # map input types to rpc msg
        _params = dict()
        msg = dict(type='ModelManager',
                   request='ListModels',
                   version=5,
                   params=_params)
        _params['tag'] = tag
        reply = await self.rpc(msg)
        return reply
tag : str
        Returns -> typing.Sequence[~UserModel]