code: def test_cublas_handle(self):
      self._check_handle(cuda.get_cublas_handle)
  
imports: import re
  import threading
  import unittest
  import pytest
  import cupy
  from cupy import cuda
  from cupy import testing
label_desc: Use image node_id 2 for calling the TestDeviceHandles obj's underlying member method code with example usage: obj.test_cublas_handle() without return types