code: def testIntersectionMethod(self):
      g = Graph.Tree(7, 2).intersection(Graph.Lattice([7]))
      self.assertTrue(g.get_edgelist() == [(0, 1)])
  
imports: import unittest
  from igraph import Graph, disjoint_union, intersection, union
label_desc: Use image node_id 17 for calling the OperatorTests obj's underlying member method code with example usage: obj.testIntersectionMethod() without return types