code: def test_fit_obs(self, close_figures):
      df = gendat()
      imp_data = mice.MICEData(df)
      imp_data.update_all()
  
      plt.clf()
      for plot_points in False, True:
          fig = imp_data.plot_fit_obs("x4", plot_points=plot_points)
          fig.get_axes()[0].set_title("plot_fit_scatterplot")
          close_or_save(pdf, fig)
          close_figures()
  
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 9 for calling the TestMICEData obj's underlying member method code with example usage: obj.test_fit_obs(close_figures) without return types