code: def _convert_watch_key_to_tensor_name(watch_key):
      return watch_key[: watch_key.rfind(":")]
  
file_path: tensorflow-upstream/tensorflow/python/debug/lib/source_utils.py
imports: import collections
  import os
  import re
  import zipfile
  from absl import app
  import numpy
  from tensorflow.python.debug.lib import profiling
label_desc: Use image node_id 4 for calling a global function with example usage: _convert_watch_key_to_tensor_name(watch_key) and returns: watch_key