code: def testGetBiadjacency(self):
      mat = [[0, 1, 1], [1, 1, 0]]
      v1, v2 = [0, 1], [2, 3, 4]
      g = Graph.Biadjacency(mat)
      self.assertTrue(g.get_biadjacency() == (mat, v1, v2))
      g.vs["type2"] = g.vs["type"]
      self.assertTrue(g.get_biadjacency("type2") == (mat, v1, v2))
      self.assertTrue(g.get_biadjacency(g.vs["type2"]) == (mat, v1, v2))
  
file_path: python-igraph/tests/test_bipartite.py
imports: import unittest
  from igraph import Graph
label_desc: Use image node_id 5 for calling the BipartiteTests obj's underlying member method code with example usage: obj.testGetBiadjacency() without return types