public void CanUnRegisterAnInterrupter()
            {
                var executor         = new BTExecutor(new ModelSuccess(null));
                var modelInterrupter = new ModelInterrupter(null, new ModelSuccess(null));

                var executionInterrupter = (ExecutionInterrupter)modelInterrupter.CreateExecutor(executor, null);

                executor.RegisterInterrupter(executionInterrupter);
                executor.UnregisterInterrupter(executionInterrupter);

                Assert.Null(executor.GetExecutionInterrupter(modelInterrupter));
            }