code: def to_networkx_test_data(self):
      adj = Matrices(3, 3).random_point()
      point = self._Point(adj)
  
      smoke_data = [dict(point=point)]
  
      return self.generate_tests(smoke_data)
  
imports: import random
  import geomstats.backend
  from geomstats.geometry.matrices import Matrices
  from geomstats.geometry.stratified.graph_space import ExhaustiveAligner, FAQAligner, GraphPoint, GraphSpace, GraphSpaceMetric, IDAligner, PointToGeodesicAligner, _GeodesicToPointAligner, _vectorize_graph, _vectorize_graph_to_points
  from geomstats.test.data import TestData
  from geomstats.test.test_case import np_backend
  from .point_set import PointMetricTestData, PointSetTestData, PointTestData
label_desc: Use image node_id 2 for calling the GraphTestData obj's underlying member method code with example usage: obj.to_networkx_test_data() and returns: self