プロパティ/フィールド インジェクション

If the object has a local default and Inject is optional, Property/Field Injection can be used.

class ClassA{    [Inject]    IServiceA serviceA { get; set; } // Will be overwritten if something is registered.
    public ClassA()    {        serviceA = ServiceA.GoodLocalDefault;    }}

It can resolve like this:

    [Inject]    IServiceA serviceA;