code: def testImportLaidOutTensorOperation(self):
      laid_out_x = LaidOutTensor([self.x])
  
      import_laid_out_tensor_operation = (
          mtf.ImportLaidOutTensorOperation(
              self.mesh, laid_out_x, self.ab_shape
          )
      )
      self.assertEqual(
          import_laid_out_tensor_operation.splittable_dims, frozenset()
      )
      self.assertEqual(
          import_laid_out_tensor_operation.unsplittable_dims,
          frozenset(["a", "b"]),
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import parameterized
  import mesh_tensorflow
  from mesh_tensorflow import test_utils
  import numpy
  import tensorflow.compat.v1
  from tensorflow.python.framework import test_util
label_desc: Use image node_id 20 for calling the OperationSplittabilityTest obj's underlying member method code with example usage: obj.testImportLaidOutTensorOperation() without return types