def METHOD_NAME(self):
    '''
    Get all pre-trained models information in dataset.
    Return:
        result(dict): key is category name, value is a list which contains models \
            information such as name, format and version.
    '''
    api = '{}/{}'.format(self._url, 'fastdeploy_listmodels')
    try:
        result = requests.get(api, timeout=self._timeout)
        return result.json()
    except requests.exceptions.ConnectionError as e:
        raise ServerConnectionError(self._url)