code: def test_margins_table(self):
      res1 = self.res1
      sl = self.res1_slice
      rf = self.rtol_fac
      assert_allclose(
          self.margeff.margeff, self.res1.params[sl], rtol=1e-5 * rf
      )
      assert_allclose(
          self.margeff.margeff_se, self.res1.bse[sl], rtol=1e-6 * rf
      )
      assert_allclose(
          self.margeff.pvalues, self.res1.pvalues[sl], rtol=5e-6 * rf
      )
      assert_allclose(
          self.margeff.conf_int(),
          res1.margins_table[sl, 4:6],
          rtol=1e-6 * rf,
      )
  
imports: import numpy
  from numpy.testing import assert_allclose
  from statsmodels.datasets.cpunish import load
  from statsmodels.discrete.discrete_model import NegativeBinomial, NegativeBinomialP, Poisson
  import statsmodels.discrete.tests.results.results_count_margins
  from statsmodels.tools.tools import add_constant
label_desc: Use image node_id 1 for calling the CheckMarginMixin obj's underlying member method code with example usage: obj.test_margins_table() without return types