code: def test_cupy_matmul_noncontiguous(self, xp, dtype1, dtype2):
      x1 = testing.shaped_arange(self.shape_pair[0], xp, dtype1)
      x2 = testing.shaped_arange(self.shape_pair[1], xp, dtype2)
      out = xp.zeros(self.shape_pair[2], dtype1)[::-1]
      ret = xp.matmul(x1, x2, out=out)
      # TODO: Fix GUFunc bug
      # assert ret is out
      assert xp.allclose(ret, out)
      return ret
  
imports: import operator
  import unittest
  import numpy
  import pytest
  import cupy
  from cupy._core import _routines_linalg
  from cupy import testing
label_desc: Use image node_id 1 for calling the TestMatmulOut obj's underlying member method code with example usage: obj.test_cupy_matmul_noncontiguous(xp, dtype1, dtype2) and returns: ret