code: def test_batched_decomposition(self, dtype):
      if not cusolver.check_availability("potrfBatched"):
          pytest.skip("potrfBatched is not available")
      Ab1 = random_matrix((3, 5, 5), dtype, scale=(10, 10000), sym=True)
      self.check_L(Ab1)
      Ab2 = random_matrix(
          (2, 2, 5, 5), dtype, scale=(10, 10000), sym=True
      )
      self.check_L(Ab2)
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupyx import cusolver
  from cupy.cuda import driver
  from cupy.cuda import runtime
  from cupy.linalg import _util
  from cupy import testing
  from cupy.testing import _condition
  import cupyx
label_desc: Use image node_id 3 for calling the TestCholeskyDecomposition obj's underlying member method code with example usage: obj.test_batched_decomposition(dtype) without return types