code: def enc_dec_extended_attention_mask(attention_mask_list):
      return [
          attn_mask_postprocess(attn_mask)
          for attn_mask in attention_mask_list
      ]
  
imports: import itertools
  import math
  from typing import Dict, Iterator, List, Tuple, Union
  import torch
  import torch.nn
  from torch import Tensor
label_desc: Use image node_id 15 for calling a global function with example usage: enc_dec_extended_attention_mask(attention_mask_list) and returns: unknown