code: def seq_filter(datum, tensor):
      """TFDBG data directory filter for capturing topk_seq operation dumps.
  
      Args:
        datum: A datum to filter by node_name.
        tensor: Unused. Required by tfdbg
  
      Returns:
        a true when datum should be returned.
      """
      del tensor
      return "topk_seq" in datum.node_name
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from collections import deque
  import glob
  import os
  import shutil
  import time
  import numpy
  from six.moves import range
  from tensor2tensor.bin import t2t_trainer
  from tensor2tensor.data_generators import text_encoder
  from tensor2tensor.insights import graph
  from tensor2tensor.insights import query_processor
  from tensor2tensor.utils import decoding
  from tensor2tensor.utils import trainer_lib
  from tensor2tensor.utils import usr_dir
  import tensorflow.compat.v1
  from tensorflow.python import debug
label_desc: Use image node_id 2 for calling a global function with example usage: seq_filter(datum, tensor) and returns: unknown