code: def clear_session_after_test():
      """Test wrapper to clean up after TensorFlow and CNTK tests.
  
      This wrapper runs for all the tests in the keras test suite.
      """
      yield
      if K.backend() == "tensorflow" or K.backend() == "cntk":
          K.clear_session()
  
label_desc: Use image node_id 1 for calling a global function with example usage: clear_session_after_test() without return types