code: def determine_route(
      self, value: Optional[str] = None, force: bool = False
  ) -> Optional[int]:
      alive_ilabels = self.ilabels
      if len(alive_ilabels) == 0:
          *_, most_successful_ilabel = self._dead_ilabels
          raise ParseError(
              "bad input", most_successful_ilabel, value, self.context
          )
  
      ilabel, *rest = alive_ilabels
      if force or not rest:
          return ilabel
      else:
          return None
  
imports: from contextlib import contextmanager
  from typing import TYPE_CHECKING, Any, Callable, Dict, Iterator, List, Optional, Set, Tuple, Union, cast
  from blib2to3.pgen2.grammar import Grammar
  from blib2to3.pytree import NL, Context, Leaf, Node, RawNode, convert
  from .None import grammar, token, tokenize
label_desc: Use image node_id 6 for calling the Recorder obj's underlying member method code with example usage: obj.determine_route(value, force) and returns: ilabel, None