code: def testAssertShallowStructure(self):
      inp_ab = ("a", "b")
      inp_abc = ("a", "b", "c")
      expected_message = (
          "The two structures don't have the same sequence length. Input "
          "structure has length 2, while shallow structure has length 3."
      )
      with self.assertRaisesRegex(ValueError, expected_message):
          nest.assert_shallow_structure(inp_abc, inp_ab)
  
      inp_ab1 = ((1, 1), (2, 2))
      inp_ab2 = {"a": (1, 1), "b": (2, 2)}
      expected_message = (
          "The two structures don't have the same sequence type. Input structure "
          "has type 'tuple', while shallow structure has type "
          "'dict'."
      )
      with self.assertRaisesRegex(TypeError, expected_message):
          nest.assert_shallow_structure(inp_ab2, inp_ab1)
      nest.assert_shallow_structure(inp_ab2, inp_ab1, check_types=False)
  
      inp_ab1 = {"a": (1, 1), "b": {"c": (2, 2)}}
      inp_ab2 = {"a": (1, 1), "b": {"d": (2, 2)}}
      expected_message = (
          r"The two structures don't have the same keys. Input "
          r"structure has keys \['c'\], while shallow structure has "
          r"keys \['d'\]."
      )
      with self.assertRaisesRegex(ValueError, expected_message):
          nest.assert_shallow_structure(inp_ab2, inp_ab1)
  
      inp_ab = collections.OrderedDict([("a", 1), ("b", (2, 3))])
      inp_ba = collections.OrderedDict([("b", (2, 3)), ("a", 1)])
      nest.assert_shallow_structure(inp_ab, inp_ba)
  
imports: import collections
  import dataclasses
  from absl.testing import parameterized
  import numpy
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.util import nest
  from tensorflow.python.framework import combinations
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import sparse_tensor
  from tensorflow.python.framework import tensor
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops.ragged import ragged_factory_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 16 for calling the NestTest obj's underlying member method code with example usage: obj.testAssertShallowStructure() without return types