code: def test_str_split4(self):
      self.run_test(
          "def str_split4(s): return s.split()", "", str_split4=[str]
      )
  
imports: from pythran.tests import TestEnv
  from pythran.typing import List
  import unittest
label_desc: Use image node_id 30 for calling the TestStr obj's underlying member method code with example usage: obj.test_str_split4() without return types