[T5]How to override the service?

[Jun Tsai]

hi,have many service implement same interface.

public A buildA1(){
  ......
}
public A buildA2(){
 .......
}

I want to override A1 Service.How to do?I find the alias only use class name
to override.

AliasContribution.create(XX.class,
    XX).

Thanks

-- 
regards,
Jun Tsai