code: def test_graph_combined_as_expected(self):
      person = Thing("V123", "person", "entity")
      employment = Thing("V567", "employment", "relation")
      typedb_graph_a = nx.MultiDiGraph()
      typedb_graph_a.add_node(person)
      typedb_graph_a.add_node(employment)
      typedb_graph_a.add_edge(employment, person, type="employee")
  
      person_b = Thing("V123", "person", "entity")
      name = Thing(
          "V1234", "name", "attribute", value_type="string", value="Bob"
      )
      typedb_graph_b = nx.MultiDiGraph()
      typedb_graph_b.add_node(person_b)
      typedb_graph_b.add_node(name)
      typedb_graph_b.add_edge(person_b, name, type="has")
  
      combined_graph = combine_n_graphs(
          [typedb_graph_a, typedb_graph_b]
      )
  
      person_ex = Thing("V123", "person", "entity")
      employment_ex = Thing("V567", "employment", "relation")
      name_ex = Thing(
          "V1234", "name", "attribute", value_type="string", value="Bob"
      )
      expected_combined_graph = nx.MultiDiGraph()
      expected_combined_graph.add_node(person_ex)
      expected_combined_graph.add_node(name_ex)
      expected_combined_graph.add_node(employment_ex)
      expected_combined_graph.add_edge(
          employment_ex, person_ex, type="employee"
      )
      expected_combined_graph.add_edge(person_ex, name_ex, type="has")
  
      self.assertGraphsEqual(expected_combined_graph, combined_graph)
  
imports: import unittest
  import networkx
  from typedb.api.concept.type.attribute_type import AttributeType
  from typedb_ml.networkx.graph_test_case import GraphTestCase
  from typedb_ml.networkx.queries_to_networkx import concept_dict_from_concept_map, combine_n_graphs, build_graph_from_queries
  from typedb_ml.networkx.query_graph import Query
  from typedb_ml.typedb.test.mock.answer import MockConceptMap
  from typedb_ml.typedb.test.mock.concept import MockType, MockAttributeType, MockThing, MockAttribute
  from typedb_ml.typedb.thing import Thing
label_desc: Use image node_id 1 for calling the TestCombineGraphs obj's underlying member method code with example usage: obj.test_graph_combined_as_expected() without return types