// INJECT
public TaskLifeCycle(
HashSet<IObserver<ITaskStop>> taskStopHandlers,
HashSet<IObserver<ITaskStart>> taskStartHandlers,
TaskStartImpl taskStart,
TaskStopImpl taskStop)
{
_taskStartHandlers = taskStartHandlers;
_taskStopHandlers = taskStopHandlers;
_taskStart = taskStart;
_taskStop = taskStop;
}