parameters: (save_dir, latest_filename)
return_statement: return os.path.join(save_dir, latest_filename)
docstring: Returns a filename for storing the CheckpointState.
  
    Args:
      save_dir: The directory for saving and restoring checkpoints.
      latest_filename: Name of the file in 'save_dir' that is used
        to store the CheckpointState.
  
    Returns:
      The path of the file that contains the CheckpointState proto.
docstring_summary: Returns a filename for storing the CheckpointState.
docstring_tokens: Returns a filename for storing the CheckpointState .
function: def _GetCheckpointFilename(save_dir, latest_filename):
    """Returns a filename for storing the CheckpointState.
  
    Args:
      save_dir: The directory for saving and restoring checkpoints.
      latest_filename: Name of the file in 'save_dir' that is used
        to store the CheckpointState.
  
    Returns:
      The path of the file that contains the CheckpointState proto.
    """
    if latest_filename is None:
      latest_filename = "checkpoint"
    return os.path.join(save_dir, latest_filename)
function_tokens: def _GetCheckpointFilename ( save_dir , latest_filename ) : if latest_filename is None : latest_filename = "checkpoint" return os . path . join ( save_dir , latest_filename )