code: def test_set_delay(self):
      val = 256
      self.o.set_delay(val)
      assert_equal(self.o.get_delay(), val)
  
imports: from numpy.testing import TestCase, assert_equal, assert_almost_equal
  from aubio import onset, fvec
label_desc: Use image node_id 9 for calling the aubio_onset_params obj's underlying member method code with example usage: obj.test_set_delay() without return types