code: def testEmpty(self):
      st = sparse_tensor.SparseTensor(
          indices=array_ops.zeros([0, 2], dtype=dtypes.int64),
          values=[],
          dense_shape=[4, 3],
      )
      rt = RaggedTensor.from_sparse(st)
  
      self.assertAllEqual(rt, [[], [], [], []])
  
file_path: tensorflow/tensorflow/python/ops/ragged/ragged_from_sparse_op_test.py
imports: from tensorflow.python.eager import context
  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.ragged.ragged_tensor import RaggedTensor
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 2 for calling the RaggedTensorToSparseOpTest obj's underlying member method code with example usage: obj.testEmpty() without return types