code: def test_long_set(self):
      block_val = predicates.commonSetElementPredicate(self.s1)
      self.assertEqual(set(block_val), set(("blue", "green", "red")))
  
imports: import unittest
  from dedupe import predicates
label_desc: Use image node_id 2 for calling the TestSetElement obj's underlying member method code with example usage: obj.test_long_set() without return types