code: def flatten_list(summary_ids: List[List]):
      return [x for x in itertools.chain.from_iterable(summary_ids)]
  
imports: import itertools
  import json
  import linecache
  import os
  import pickle
  import re
  import socket
  import string
  from collections import Counter
  from logging import getLogger
  from pathlib import Path
  from typing import Callable, Dict, Iterable, List
  import git
  import torch
  from torch.utils.data import Dataset
  from transformers import BartTokenizer, RagTokenizer, T5Tokenizer
label_desc: Use image node_id 3 for calling a global function with example usage: flatten_list(summary_ids) and returns: unknown