code: def __call__(self, thing):
      self.string = self.sanitizer(thing)
      return self
  
imports: import pytest
  import textwrap
  import difflib
  import re
  import sys
  import contextlib
  import platform
  import gc
label_desc: Use image node_id 2 for calling the SanitizedString obj's underlying member method code with example usage: obj.__call__(thing) and returns: self