code: def test_optimize_reduction_kernel(self):
      my_sum = cupy.ReductionKernel(
          "T x", "T out", "x", "a + b", "out = a", "0", "my_sum"
      )
      x = testing.shaped_arange((3, 4), cupy)
      y1 = my_sum(x, axis=1)
      with cupyx.optimizing.optimize():
          y2 = my_sum(x, axis=1)
      testing.assert_array_equal(y1, y2)
  
imports: import os
  import tempfile
  import unittest
  from unittest import mock
  import pytest
  import cupy
  from cupy import testing
  from cupy._core import _accelerator
label_desc: Use image node_id 2 for calling the TestOptimize obj's underlying member method code with example usage: obj.test_optimize_reduction_kernel() without return types