code: def test_stack(self, data, columns, future_stack):
      super().test_stack(data, columns, future_stack)
  
imports: import numpy
  import pytest
  from pandas.errors import PerformanceWarning
  import pandas
  from pandas import SparseDtype
  import pandas._testing
  from pandas.arrays import SparseArray
  from pandas.tests.extension import base
label_desc: Use image node_id 6 for calling the TestSparseArray obj's underlying member method code with example usage: obj.test_stack(data, columns, future_stack) without return types