code: def indent(self) -> None:
      save_level = self.level
      try:
          self.level += 1
          yield
      finally:
          self.level = save_level
  
imports: import argparse
  import builtins
  import collections
  import contextlib
  import os
  import re
  import time
  import types
  from typing import Dict, FrozenSet, TextIO, Tuple
  import umarshal
label_desc: Use image node_id 3 for calling the Printer obj's underlying member method code with example usage: obj.indent() without return types