code: def testMapOnSparseTensor(self):
      s = sparse_tensor.SparseTensor(
          indices=[[0, 0], [0, 1], [1, 0], [1, 1]],
          values=[0, 5, 0, 4],
          dense_shape=[2, 2],
      )
      t2 = ragged_tensor.RaggedTensor.from_sparse(s)
      id_t2 = ragged_map_ops.map_fn(
          lambda x: x,
          t2,
      )
      self.assertAllEqual(id_t2, [[0, 5], [0, 4]])
  
imports: from absl.testing import parameterized
  import numpy
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import sparse_tensor
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import array_ops_stack
  from tensorflow.python.ops import map_fn
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import string_ops
  from tensorflow.python.ops.ragged import ragged_factory_ops
  from tensorflow.python.ops.ragged import ragged_functional_ops
  from tensorflow.python.ops.ragged import ragged_map_ops
  from tensorflow.python.ops.ragged import ragged_math_ops
  from tensorflow.python.ops.ragged import ragged_tensor
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 8 for calling the RaggedMapOpTest obj's underlying member method code with example usage: obj.testMapOnSparseTensor() without return types