docstr: with statement support for indenting/dedenting.
docstr_tok: ["with","statement","support","for","indenting\/dedenting","."]
code: def indent(self, indent):
      """with statement support for indenting/dedenting."""
      self.indentation += indent
      try:
          yield
      finally:
          self.indentation -= indent
  
imports: from __future__ import absolute_import, division, print_function
  import datetime
  import platform
  import re
  import sys
  import types
  from collections import deque
  from contextlib import contextmanager
  from io import StringIO
  from hypothesis.internal.compat import PY3, cast_unicode, get_stream_enc, string_types
label_desc: Use image node_id 1 for calling the _PrettyPrinterBase obj's underlying member method code with example usage: obj.indent(indent) without return types