code: def load_run_to_series(filename):
      run_to_series = collections.defaultdict(list)
      with open(filename) as f:
          for line in f:
              series = json.loads(line)
              run_to_series[series["run"]].append(series)
      return run_to_series
  
file_path: tensorboard/tensorboard/tools/convert_tbdev_export.py
imports: import argparse
  import base64
  import collections
  import json
  import logging
  import os
  import re
  import tempfile
  from tensorboard.compat.proto.event_pb2 import Event
  from tensorboard.compat.proto.summary_pb2 import Summary
  from tensorboard.summary.writer.event_file_writer import EventFileWriter
  from tensorboard.util import tensor_util
label_desc: Use image node_id 6 for calling a global function with example usage: load_run_to_series(filename) and returns: run_to_series