CancellationHandle

Implementations of this interface can be used to cancel an ongoing operation or unregister a listener by calling cancel.

Summary

Public functions
Unit

Cancels the operation that this handle was returned for.
Cmn

Public functions

cancel

Cmn 
fun cancel(): Unit

Cancels the operation that this handle was returned for. Implementations of this method should be idempotent. Callers should be able to cancel the same handle a second time without causing any externally visible effects.