code: def generate_c_parser_source(grammar: Grammar) -> str:
      out = io.StringIO()
      genr = CParserGenerator(
          grammar, ALL_TOKENS, EXACT_TOKENS, NON_EXACT_TOKENS, out
      )
      genr.generate("<string>")
      return out.getvalue()
  
imports: import importlib.util
  import io
  import os
  import pathlib
  import sys
  import textwrap
  import token
  import tokenize
  from typing import IO, Any, Dict, Final, Optional, Type, cast
  from pegen.build import compile_c_extension
  from pegen.c_generator import CParserGenerator
  from pegen.grammar import Grammar
  from pegen.grammar_parser import GeneratedParser
  from pegen.parser import Parser
  from pegen.python_generator import PythonParserGenerator
  from pegen.tokenizer import Tokenizer
label_desc: Use image node_id 6 for calling a global function with example usage: generate_c_parser_source(grammar) and returns: out