void StartGame()
{
UnityTicker tickEngine = new UnityTicker(); //note this object can be safely garbage collected
tickEngine.Add(container.Inject(new MonsterSpawner()));
tickEngine.Add(container.Build <UnderAttackSystem>());
}
void StartGame()
{
//tickEngine could be added in the container as well
//if needed to other classes!
UnityTicker tickEngine = new UnityTicker();
tickEngine.Add(container.Build <MonsterSpawner>());
tickEngine.Add(container.Build <UnderAttackSystem>());
}