docs: def parse_known2func(self, args=None, func=None):
          """Parse the command line arguments to the setup function
  
          This method parses the given command line arguments to the function
          used in the :meth:`setup_args` method to setup up this parser
  
          Parameters
          ----------
          args: list
              The list of command line arguments
          func: function or str
              An alternative function to use. If None, the last function or the
              one specified through the `setup_as` parameter in the
              :meth:`setup_args` is used.
  
          Returns
          -------
          object
              What ever is returned by the called function
          list
              The remaining command line arguments that could not be interpreted
  
          Note
          ----
          This method does not cover subparsers!"""
          ns, remainder = self.parse_known_args(args)
          kws = vars(ns)
          if func is None:
              if self._setup_as:
                  func = kws.pop(self._setup_as)
              else:
                  func = self._used_functions[-1]
          return func(**kws), remainder