code: def test_mult_1(self):
      self.run_test(
          "def mult_1(a):\n b=[1,2,3,8,7,4] * a\n return b",
          8,
          mult_1=[int],
      )
  
imports: from pythran.tests import TestEnv
  from pythran.typing import List, NDArray
  import numpy
label_desc: Use image node_id 18 for calling the TestList obj's underlying member method code with example usage: obj.test_mult_1() without return types