A signature can embed a token that identifies the enclosing class or value type.
签名中可以嵌入标识封闭类或值类型的标记。
To preserve this functionality, the refactoring will add an instance of the enclosing class BagExample to the formerly nested class.
为了保留这种功能，重构过程将一个装入类 BagExample 的实例放在前面那个嵌套类中。
The first set of enclosing braces delineates the construction of an anonymous inner class, and the second set delineates the instance initializer for the anonymous inner class.
第一组闭合括弧划定一个匿名内部类的构造，第二组划定匿名内部类的实例初始化语句块。
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