code: def test_unstack(self, data, index):
      # The base test has NaN for the expected NA value.
      # this matches otherwise
      return super().test_unstack(data, index)
  
imports: import collections
  import operator
  import sys
  import numpy
  import pytest
  import pandas
  import pandas._testing
  from pandas.tests.extension import base
  from pandas.tests.extension.json.array import JSONArray, JSONDtype, make_data
label_desc: Use image node_id 7 for calling the TestJSONArray obj's underlying member method code with example usage: obj.test_unstack(data, index) and returns: super