code: def testUnknownIndices(self):
      params = constant_op.constant([[0, 1, 2]])
      indices = array_ops.placeholder(dtypes.int32)
      gather_nd_t = array_ops.gather_nd(params, indices)
      shape = gather_nd_t.get_shape()
      self.assertEqual(None, shape.ndims)
      self.assertEqual(None, tensor_shape.dimension_value(shape[0]))
  
imports: import time
  import numpy
  from tensorflow.python.client import session
  from tensorflow.python.eager import context
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import indexed_slices
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor_shape
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import gradients_impl
  from tensorflow.python.ops import ref_variable
  from tensorflow.python.ops import resource_variable_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
label_desc: Use image node_id 13 for calling the GatherNdTest obj's underlying member method code with example usage: obj.testUnknownIndices() without return types