code: def test_after(self):
      view = self.view
      ar = view.apply_async(time.sleep, 0.5)
      with view.temp_flags(after=ar):
          ar2 = view.apply_async(lambda: 1)
  
      ar.wait()
      ar2.wait()
      assert ar2.started >= ar.completed
  
imports: import time
  from itertools import count
  import pytest
  import ipyparallel
  from ipyparallel import error
  from .clienttest import ClusterTestCase, crash, raises_remote
label_desc: Use image node_id 20 for calling the TestLoadBalancedView obj's underlying member method code with example usage: obj.test_after() without return types