code: def testIntersectionMany(self):
      gs = [Graph.Tree(7, 2), Graph.Lattice([7])]
      g = intersection(gs)
      self.assertTrue(g.get_edgelist() == [(0, 1)])
  
imports: import unittest
  from igraph import Graph, disjoint_union, intersection, union
label_desc: Use image node_id 20 for calling the OperatorTests obj's underlying member method code with example usage: obj.testIntersectionMany() without return types