- Type Parameters:
R - return type
E - extension type
X - optional exception type thrown by the callback
- Functional Interface:
- This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
Will be invoked with a live extension.
R withExtension(E extension)
Will be invoked with a live extension. The associated handle will be closed when this callback returns.
extension - extension to be used only within the scope of this callback.
- the return value of the callback
X - optional exception thrown by this callback.