They are traditionally lightweight and used for executing tasks such as cache cleanup and object cleanup.
这些线程通常都是轻量级的，用于执行缓存清理和对象清理之类的事务。
Cleanup takes the claim token in the data object of type TicketEnvelope to locate and remove the attachment content from storage.
清除操作接受ticketenvelope类型的数据对象中的索取令牌来定位并从存储中删除附件内容。
The constructor and destructor methods of this object do the necessary setup and cleanup.
这个对象的constructor和destructor方法执行必需的设置和清除工作。
As a cleanup, this context object is set to null once destroy method is called.
当清除时，一旦调用destroy方法，context对象就被设置为null。
All Reference types are cleared before they are enqueued, so the thread handling the post-mortem cleanup never has access to the referent object, only the Reference object.
所有Reference类型在加入队列之前被清除，所以处理事后检查(post - mortem)清除的线程永远不会具有referent对象的访问权，而只具有Reference对象的访问权。
For checkout and cleanup, TicketEnvelope is the input data object.
对于checkout和cleanup,TicketEnvelope是输入数据对象。
To use the new syntax, you must know or obtain the DN of the NTDS settings object of the server that is being demoted. To use the new syntax for metadata cleanup, follow these steps
要使用新语法，您必须知道或获取要降级的服务器的“NTDS设置”对象的DN。
This is the place where you would place any cleanup code for your object.
这是地方，你会为你的对象发生任何清理代码。
If you want the garbage collector to perform cleanup operations on your object before it reclaims the object's memory, you must override this method in your class.
如果要让垃圾回收器在回收对象的内存之前对对象执行清理操作，您必须在类中重写此方法。
If you want the garbage collector to perform cleanup operations on your object before it reclaims the object's memory, you must override this method in your class.
如果要让垃圾回收器在回收对象的内存之前对对象执行清理操作，您必须在类中重写此方法。
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