code: def test_timeout_block_for_loop(self):
      i = iter_with_sleep()
      it = TimeoutIterator(i)
      iterResults = []
      for x in it:
          iterResults.append(x)
      self.assertEqual(iterResults, [1, 2, 3])
  
imports: import unittest
  import time
  from iterators import TimeoutIterator
label_desc: Use image node_id 4 for calling the TestTimeoutIterator obj's underlying member method code with example usage: obj.test_timeout_block_for_loop() without return types