code: def testReshapeOperation(self):
      reshape_operation = mtf.ReshapeOperation(
          self.x,
          mtf.Shape([mtf.Dimension("x", 25), mtf.Dimension("y", 2)]),
      )
      self.assertEqual(
          reshape_operation.splittable_dims,
          frozenset(["a", "b", "x", "y"]),
      )
      self.assertEqual(reshape_operation.unsplittable_dims, frozenset())
  
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 25 for calling the OperationSplittabilityTest obj's underlying member method code with example usage: obj.testReshapeOperation() without return types