code: def add_argument_group(self, *args, **kwargs):
      group = ArgumentGroup(self, *args, **kwargs)
      self._action_groups.append(group)
      return group
  
file_path: snakemake/snakemake/common/argparse.py
imports: import argparse
  import configargparse
label_desc: Use image node_id 2 for calling the ArgumentParser obj's underlying member method code with example usage: obj.add_argument_group() and returns: group