code: def testSlicing(self):
      t = structural_tuple.structtuple(["a", "b", "c"])
      inst = t(a=1, b=2, c=3)
  
      abc = inst[:]
      self.assertAllEqual((1, 2, 3), tuple(abc))
      self.assertAllEqual(("a", "b", "c"), abc._fields)
  
      ab = inst[:2]
      self.assertAllEqual((1, 2), tuple(ab))
      self.assertAllEqual(("a", "b"), ab._fields)
  
      ac = inst[::2]
      self.assertAllEqual((1, 3), tuple(ac))
      self.assertAllEqual(("a", "c"), ac._fields)
  
      ab2 = abc[:2]
      self.assertAllEqual((1, 2), tuple(ab2))
      self.assertAllEqual(("a", "b"), ab2._fields)
  
imports: import tensorflow.compat.v2
  from tensorflow_probability.python.internal import nest_util
  from tensorflow_probability.python.internal import structural_tuple
  from tensorflow_probability.python.internal import test_util
  from tensorflow.python.util import nest
label_desc: Use image node_id 4 for calling the StructTupleTest obj's underlying member method code with example usage: obj.testSlicing() without return types