code: def testIntersection(self):
      g = Graph.Tree(7, 2) & 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 16 for calling the OperatorTests obj's underlying member method code with example usage: obj.testIntersection() without return types