code: def _getModelCheckpointDir(experimentDir, checkpointLabel):
    
    checkpointDir = os.path.join(getCheckpointParentDir(experimentDir),
                                 checkpointLabel + g_defaultCheckpointExtension)
    checkpointDir = os.path.abspath(checkpointDir)
  
    return checkpointDir
docs: Creates directory for serialization of the model
  
    checkpointLabel:
        Checkpoint label (string)
  
    Returns:
      absolute path to the serialization directory