class_docstr: Writes a single pyi file
class_docstr_tok: ["Writes","a","single","pyi","file"]
code: def _write_line(self, line: str, *args: Any) -> None:
      if args:
          line = line.format(*args)
      if line == "":
          self.lines.append(line)
      else:
          self.lines.append(self.indent + line)
  
imports: from __future__ import annotations
  import sys
  from collections import defaultdict
  from contextlib import contextmanager
  from typing import Any, Callable, Dict, Iterable, Iterator, List, Optional, Set, Sequence, Tuple
  import google.protobuf.descriptor_pb2
  from google.protobuf.compiler import plugin_pb2
  from google.protobuf.internal.containers import RepeatedCompositeFieldContainer
  from google.protobuf.internal.well_known_types import WKTBASES
  from .None import extensions_pb2
label_desc: Use image node_id 6 for calling the PkgWriter obj's underlying member method code with example usage: obj._write_line(line) without return types