code: def random_sign(self):
      return self._random_sign
  
imports: import warnings
  from typing import Callable, Tuple, Optional, Union
  from nvidia.dali import fn, types
  from nvidia.dali.data_node import DataNode
  from nvidia.dali.auto_aug.core._args import filter_extra_accepted_kwargs, get_missing_kwargs, get_num_positional_args, MissingArgException
  from numpy import typing
label_desc: Use image node_id 6 for calling the _SignedMagnitudeBin obj's underlying member method code with example usage: obj.random_sign() and returns: self