对此类型的引用指示与安全性无关但多次使用的自定义特性。

References to this type indicate custom attributes that are not security related but are multiple-use.

youdao

这些引用指示您看到的是真正的值列表，而不是副本，并会在更改属性值时进行更新。

These references indicate that you are looking at the real list of values, not a copy, and it will be updated as you make changes to the property value.

youdao

实现也可以调用其他服务，称之为服务引用，服务引用指示了此实现对外界服务的依赖关系。

Implementations can also use other services, called service references, which indicate the implementation's dependency on services provided elsewhere.

youdao