code: def _remap_to_signed_magnitudes(magnitudes):
      def remap_bin_idx(bin_idx):
          magnitude = magnitudes[bin_idx // 2]
          if bin_idx % 2:
              magnitude = -magnitude
          return magnitude
  
      return np.array(
          [
              remap_bin_idx(bin_idx)
              for bin_idx in range(2 * len(magnitudes))
          ]
      )
  
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 4 for calling the _SignedMagnitudeBin obj's underlying member method code with example usage: obj._remap_to_signed_magnitudes(magnitudes) and returns: np, magnitude