code: def test_update_node_parents_bm_constructor(self):
      self.g = NaiveBayes(feature_vars=["b", "c"], dependent_var="a")
      self.assertListEqual(list(self.g.predecessors("a")), [])
      self.assertListEqual(list(self.g.predecessors("b")), ["a"])
      self.assertListEqual(list(self.g.predecessors("c")), ["a"])
  
imports: import unittest
  import networkx
  import pandas
  import numpy
  from pgmpy.models import NaiveBayes
  from pgmpy.independencies import Independencies
label_desc: Use image node_id 13 for calling the TestBaseModelCreation obj's underlying member method code with example usage: obj.test_update_node_parents_bm_constructor() without return types