class_docstr: a subcommand for jupytext-config
docstr: return 0 if all goes well
docstr_tok: ["return","0","if","all","goes","well"]
code: def main(self, args):
      """
      return 0 if all goes well
      """
      raise NotImplementedError()
  
imports: import sys
  from argparse import ArgumentParser
  from pathlib import Path
  import jupyter_core.paths
  from .labconfig import LabConfig
label_desc: Use image node_id 2 for calling the SubCommand obj's underlying member method code with example usage: obj.main(args) without return types