(self, data_instance)
guest -> host
        :param data_instance:
        :return:
guest -> host
        :param data_instance:
        :return:
guest - > host : param data_instance : : return :
def _sync_coverage(self, data_instance):
        """
        guest -> host
        :param data_instance:
        :return:
        """
        pass
def _sync_coverage ( self , data_instance ) : pass