code: def test_MICE(self):
      df = gendat()
      imp_data = mice.MICEData(df)
      mi = mice.MICE("y ~ x1 + x2 + x1:x2", sm.OLS, imp_data)
      result = mi.fit(1, 3)
  
      assert issubclass(result.__class__, mice.MICEResults)
  
      # Smoke test for results
      smr = result.summary()
  
imports: import numpy
  import pandas
  import pytest
  from statsmodels.imputation import mice
  import statsmodels.api
  from numpy.testing import assert_equal, assert_allclose
  import warnings
label_desc: Use image node_id 1 for calling the TestMICE obj's underlying member method code with example usage: obj.test_MICE() without return types