def add_folder(self, folder):
        return MH(os.path.join(self._path, folder),
                  factory=self._factory)
Prints the parser's help message and exits the program.
dataset/ETHPy150Open babble/babble/include/jython/Lib/mailbox.py/MH.add_folder--crossover with--dataset/ETHPy150Open CollabQ/CollabQ/.google_appengine/google/appengine/tools/appcfg.py/AppCfgApp._PrintHelpAndExit