class_docstr: Benchmark learn model selection.
class_docstr_tok: ["Benchmark","learn","model","selection","."]
code: def teardown(self):
      self._session.stop_server()
  
imports: import mars
  import mars.tensor
  from mars.learn.model_selection import train_test_split
label_desc: Use image node_id 2 for calling the ModelSelectionSuite obj's underlying member method code with example usage: obj.teardown() without return types