code: def _set_reset_parser(_parsers):
      """
      config merge parser
      """
  
      reset_parser = _parsers.add_parser(
          "reset", help="reset yaml file"
      )
  
      # indicate yaml file
      reset_parser.add_argument(
          "-f", "--file", help="indicate input yaml file"
      )
  
      reset_parser.set_defaults(
          function=reset, tips=reset_parser.format_help()
      )
  
imports: import sys
  import argparse
  from argparse import Namespace
  import os, shutil
  import getopt
  from ruamel.yaml import YAML, yaml_object
  from ruamel.yaml.comments import CommentedSeq, CommentedMap
  from ruamel.yaml.tokens import CommentToken
label_desc: Use image node_id 25 for calling a global function with example usage: _set_reset_parser(_parsers) without return types