code: def test_marginalize_error(self):
      self.assertRaises(TypeError, self.phi1.marginalize, "x1")
      self.assertRaises(
          TypeError, self.phi1.marginalize, set(["x", "y"])
      )
      self.assertRaises(
          TypeError, self.phi1.marginalize, {"x": 1, "y": 1}
      )
  
      self.assertRaises(TypeError, self.phi4.marginalize, "x4")
      self.assertRaises(
          TypeError, self.phi4.marginalize, set(["x1", "x2", "x3"])
      )
      self.assertRaises(
          TypeError, self.phi4.marginalize, {"x1": 1, "x2": 1, "x3": 1}
      )
  
      self.assertRaises(ValueError, self.phi1.marginalize, ["z"])
      self.assertRaises(
          ValueError, self.phi1.marginalize, ["x", "y", "z"]
      )
  
      self.assertRaises(ValueError, self.phi4.marginalize, ["x4"])
      self.assertRaises(
          ValueError, self.phi4.marginalize, ["x1", "x2", "x3", "x4"]
      )
  
imports: import unittest
  import numpy
  import numpy.testing
  from scipy.special import beta
  from scipy.stats import multivariate_normal
  from pgmpy.factors.continuous import ContinuousFactor
label_desc: Use image node_id 11 for calling the TestContinuousFactorMethods obj's underlying member method code with example usage: obj.test_marginalize_error() without return types