code: def testLargestIndependentVertexSets(self):
      self.assertEqual(
          self.g1.largest_independent_vertex_sets(),
          [(0, 3, 4), (2, 3, 4)],
      )
  
imports: import unittest
  from igraph import Graph
  from .utils import temporary_file
label_desc: Use image node_id 3 for calling the IndependentVertexSetTests obj's underlying member method code with example usage: obj.testLargestIndependentVertexSets() without return types