Noop

Noop does no work and passes. It is the only built-in action with a compact static factory in 4.x:

Action action = Noop.of("placeholder");

Use it when you want an explicit placeholder/result node. Optional Container.before(...) and Container.after(...) do not require Noop placeholders.

Factory:

Noop.of(String name)

Use it when you need a placeholder action or an empty lifecycle phase.

Action action = Noop.of("after");