code: def test_dry_run(self):
      seq = naf.Sometimes()
      results = seq.augment([])
      self.assertEqual(0, len(results))
  
file_path: nlpaug/test/flow/test_sometimes.py
imports: import unittest
  import nlpaug.augmenter.char
  import nlpaug.flow
  from nlpaug.util import Action
label_desc: Use image node_id 1 for calling the TestSometimes obj's underlying member method code with example usage: obj.test_dry_run() without return types