C# (CSharp) IStuff1 примеры использования

Пример #1

 public ServiceThatUsFactory(IStuff1 stuff1, IStuff2 stuff2, IStuff3 stuff3, IFactory factory)
 {
     _stuff1  = stuff1;
     _stuff2  = stuff2;
     _stuff3  = stuff3;
     _factory = factory;
 }

Пример #2

 public Service(IStuff1 stuff1, IStuff2 stuff2, IStuff3 stuff3)
 {
     _stuff1 = stuff1;
     _stuff2 = stuff2;
     _stuff3 = stuff3;
 }