code: def parse(self) -> Tuple[Dict[str, List["DFAState"]], str]:
      dfas = {}
      startsymbol: Optional[str] = None
      # MSTART: (NEWLINE | RULE)* ENDMARKER
      while self.type != token.ENDMARKER:
          while self.type == token.NEWLINE:
              self.gettoken()
          # RULE: NAME ':' RHS NEWLINE
          name = self.expect(token.NAME)
          self.expect(token.OP, ":")
          a, z = self.parse_rhs()
          self.expect(token.NEWLINE)
          # self.dump_nfa(name, a, z)
          dfa = self.make_dfa(a, z)
          # self.dump_dfa(name, dfa)
          # oldlen = len(dfa)
          self.simplify_dfa(dfa)
          # newlen = len(dfa)
          dfas[name] = dfa
          # print name, oldlen, newlen
          if startsymbol is None:
              startsymbol = name
      assert startsymbol is not None
      return dfas, startsymbol
  
imports: import os
  from typing import IO, Any, Dict, Iterator, List, NoReturn, Optional, Sequence, Tuple, Union
  from blib2to3.pgen2 import grammar, token, tokenize
  from blib2to3.pgen2.tokenize import GoodTokenInfo
  import pkgutil
  import io
label_desc: Use image node_id 7 for calling the ParserGenerator obj's underlying member method code with example usage: obj.parse() and returns: dfas,  startsymbol