code: def test_executor_submit(self):
      view = self.client.load_balanced_view()
      executor = view.executor
      f = executor.submit(lambda x, y: x * y, 2, 3)
      r = f.result()
      assert r == 6
  
file_path: ipyparallel/ipyparallel/tests/test_executor.py
imports: import time
  from ipyparallel.client.view import LazyMapIterator, LoadBalancedView
  from .clienttest import ClusterTestCase
label_desc: Use image node_id 3 for calling the TestExecutor obj's underlying member method code with example usage: obj.test_executor_submit() without return types