code: def get_registered_saver_name(trackable):
      """Returns the name of the registered saver to use with Trackable."""
      try:
          return _saver_registry.get_registered_name(trackable)
      except LookupError:
          return None
  
imports: import collections
  import re
  from tensorflow.python.util import tf_inspect
label_desc: Use image node_id 5 for calling a global function with example usage: get_registered_saver_name(trackable) and returns: _saver_registry, None