docstr: No need to export ``BatchNorm2d``. Refer to the ``Conv2d`` layer that has the ``ValueChoice`` as ``out_channels``.
docstr_tok: ["No","need","to","export","``","BatchNorm2d","``",".","Refer","to","the","``","Conv2d","``","layer","that","has","the","``","ValueChoice","``","as","``","out_channels","``","."]
code: def export(self):
      """
      No need to export ``BatchNorm2d``. Refer to the ``Conv2d`` layer that has the ``ValueChoice`` as ``out_channels``.
      """
      return -1
  
file_path: nni/nni/nas/oneshot/pytorch/supermodule/_singlepathnas.py
imports: import torch
  import torch.nn
  import torch.nn.functional
  from nni.nas.nn.pytorch import ValueChoice
label_desc: Use image node_id 2 for calling the DifferentiableBatchNorm2d obj's underlying member method code with example usage: obj.export() and returns: unknown