public ServiceB2(IServiceA2 serviceA)
 {
     _serviceA = serviceA;
 }
 public ServA3(IServiceA1 service1, IServiceA2 service2)
 {
     _servA1 = service1;
     _servA2 = service2;
 }
 public ServA3(IServiceA1 service1, IServiceA2 service2)
 {
     _servA1 = service1;
     _servA2 = service2;
 }