class_docstr: Benchmark learn model selection.
class_docstr_tok: ["Benchmark","learn","model","selection","."]
code: def time_train_test_split(self):
      t = mt.random.rand(10_000, 10, chunk_size=200)
      train_test_split(t, test_size=0.3, session=self._session)
  
imports: import mars
  import mars.tensor
  from mars.learn.model_selection import train_test_split
label_desc: Use image node_id 3 for calling the ModelSelectionSuite obj's underlying member method code with example usage: obj.time_train_test_split() without return types