code: def test_basic_argsort(self):
      class SimpleOp(nn.Module):
          def forward(self, x):
              out1 = x.argsort()
              out2 = x.argsort(dim=1)
              out3 = x.argsort(dim=1, descending=True)
              out4 = torch.argsort(x, dim=1, descending=True)
              return out1, out2, out3, out4
  
      self.checkExportImport(SimpleOp(), (torch.randn(4, 4),))
  
imports: import unittest
  import torch
  import nni.nas.nn.pytorch.layers
  from .convert_mixin import ConvertMixin, ConvertWithShapeMixin
label_desc: Use image node_id 17 for calling the TestConvert obj's underlying member method code with example usage: obj.test_basic_argsort() and returns: out1,  out2,  out3,  out4