docs: def print_hierarchy(self, level: int = 0, file: IO[str] = sys.stdout) \
              -> None:
          """
          Print this comparison and its children with indentation to represent
          nesting.
  
          :param level: The level of indentation to use. This is mostly for
                        internal use, but you can use it to inset the root
                        comparison.
          :param file: The stream to print to. Defaults to stdout.
          """
          print(' ' * self._INDENT_SIZE * level + str(self), file=file)