code: def test_ci(self):
      p = lm._RegressionPlotter("x", "y", data=self.df, ci=95)
      assert p.ci == 95
      assert p.x_ci == 95
  
      p = lm._RegressionPlotter("x", "y", data=self.df, ci=95, x_ci=68)
      assert p.ci == 95
      assert p.x_ci == 68
  
      p = lm._RegressionPlotter(
          "x", "y", data=self.df, ci=95, x_ci="sd"
      )
      assert p.ci == 95
      assert p.x_ci == "sd"
  
imports: import warnings
  import numpy
  import matplotlib
  import matplotlib.pyplot
  import pandas
  import pytest
  import numpy.testing
  import pandas.testing
  from seaborn import regression
  from seaborn.palettes import color_palette
label_desc: Use image node_id 7 for calling the TestRegressionPlotter obj's underlying member method code with example usage: obj.test_ci() without return types