docs: def _get_plugin_parser(self, plugin_obj):
          """ Creates a plugin argument parser.
  
              `plugin_obj`
                  ``Plugin`` object.
  
              Returns ``FocusArgParser`` object.
              """
  
          prog_name = 'focus ' + plugin_obj.command
          desc = (plugin_obj.__doc__ or '').strip()
  
          parser = FocusArgParser(prog=prog_name, description=desc)
          plugin_obj.setup_parser(parser)
  
          return parser