code: def test_experimental(self):
      with warnings.catch_warnings(record=True) as w:
          warnings.simplefilter("always")
          f()
  
      self.assertEqual(len(w), 0)
  
imports: import unittest
  import warnings
  import chainer
  from chainer import testing
  from chainer import utils
label_desc: Use image node_id 3 for calling the TestDisableExperimentalWarning obj's underlying member method code with example usage: obj.test_experimental() without return types