code: def test_option(self):
      kappa = cohens_kappa(table10, return_results=False)
      assert_almost_equal(kappa, self.res2[0], decimal=4)
  
imports: import numpy
  from numpy.testing import assert_almost_equal, assert_equal, assert_allclose
  from statsmodels.stats.inter_rater import fleiss_kappa, cohens_kappa, to_table, aggregate_raters
  from statsmodels.tools.testing import Holder
label_desc: Use image node_id 2 for calling the TestUnweightedCohens obj's underlying member method code with example usage: obj.test_option() without return types