code: def init_train_args(self, parser):
          '''Only invoked conditionally if subcommand is 'train' '''
          parser.add_argument('-f', '--configuration', dest='config', default=DEFAULT_USER_CONFIG_PATH,
                              help='the path to the configuration file to use -- ./config.yaml by default')
          parser.add_argument('-c', '--corpus-name', help='the name of the corpus or saved dataset to train on'f init_train_args(self, parser):
          '''Only invoked conditionally if subcommand is 'train' '''
          parser.add_argument('-f', '--configuration', dest='config', default=DEFAULT_USER_CONFIG_PATH,
                              help='the path to the configuration file to use -- ./config.yaml by default')
          parser.add_argument('-c', '--corpus-name', help='the name of the corpus or saved dataset to train on')
docs: Only invoked conditionally if subcommand is 'train'