def METHOD_NAME(es_config):
    es_man = ESIndexManager(es_config)
    old_index = es_man.internal_index_name(es_config['annotation_index'])
    new_index = es_man.another_index_name(old_index)
    tmp_es_config = deepcopy(es_config)
    tmp_es_config['index'] = new_index
    return tmp_es_config