code: def test_add_multiple_edges(self):
      self.network.add_edges_from(
          [
              (("a", 0), ("b", 0)),
              (("a", 0), ("a", 1)),
              (("b", 0), ("b", 1)),
          ]
      )
      self.assertListEqual(
          sorted(self.network.edges()),
          [
              (("a", 0), ("a", 1)),
              (("a", 0), ("b", 0)),
              (("a", 1), ("b", 1)),
              (("b", 0), ("b", 1)),
          ],
      )
  
imports: import unittest
  import numpy
  import numpy.testing
  import pandas
  import pgmpy.tests.help_functions
  from pgmpy.factors.discrete import TabularCPD
  from pgmpy.inference import CausalInference, DBNInference, VariableElimination
  from pgmpy.models import BayesianNetwork
  from pgmpy.models import DynamicBayesianNetwork
label_desc: Use image node_id 13 for calling the TestDynamicBayesianNetworkCreation obj's underlying member method code with example usage: obj.test_add_multiple_edges() without return types