What does receiver refer to in the documentation for OperationQueue?

In the context of OperationQueue, specifically in the documentation for the waitUntilAllOperationsAreFinished(), addOperation(Operation), and addOperation(()-Void) functions, what does "receiver" refer to? Does it refer to the instance of OperationQueue that calls the function?

Yes, the receiver is the OperationQueue that you are using.

What does receiver refer to in the documentation for OperationQueue?
 
 
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