@staticmethod<EOL><INDENT>def _getModelCheckpointFilePath(checkpointDir):<DEDENT>
path = os.path.join(checkpointDir, "<STR_LIT>")<EOL>path = os.path.abspath(path)<EOL>return path<EOL>
Return the absolute path of the model's checkpoint file.

        :param checkpointDir: (string)
               Directory of where the experiment is to be or was saved
        :returns: (string) An absolute path.