code: def testChainedCallableFilteringSelect(self):
      only_div_six = self.g.vs.select(
          lambda v: (v.index % 2 == 0), lambda v: (v.index % 3 == 0)
      )
      self.assertTrue(len(only_div_six) == 2)
      self.assertTrue(only_div_six["test"] == [0, 6])
  
      only_div_six = self.g.vs.select(
          lambda v: (v.index % 2 == 0)
      ).select(lambda v: (v.index % 3 == 0))
      self.assertTrue(len(only_div_six) == 2)
      self.assertTrue(only_div_six["test"] == [0, 6])
  
imports: import unittest
  from igraph import Graph, Vertex, VertexSeq
  from .utils import is_pypy
label_desc: Use image node_id 11 for calling the VertexSeqTests obj's underlying member method code with example usage: obj.testChainedCallableFilteringSelect() without return types