Interface that needs to be implemented by classes that should support
continuations functionalities and become resumable.
author: Geert Bevin (gbevin[remove] at uwyn dot com) version: $Revision: 3805 $ since: 1.6
When continuations are resumed, they are by default cloned to ensure
that their state is properly isolated. Implementing this method
allows for full customization of the cloning behavior.
See Also:ContinuationConfigRuntime.cloneContinuations the cloned instance of this continuable object throws: CloneNotSupportedException -