@Documented @Retention(RetentionPolicy.RUNTIME) @Target(ElementType.METHOD) public @interface Virtual
Marks a public trait static method as virtual:
trait-body calls to this method dispatch through the implementing class
at runtime, so a same-signature static method declared on the
implementing class overrides the trait's default.
This is the opt-in counterpart to the default declarer-bound
dispatch for trait static methods, where trait-body calls invoke the
trait's own copy regardless of any same-named static on the
implementer. The opt-in restores the per-implementer override pattern
used by Grails' Validateable.defaultNullable() and similar
framework hooks.
The marker is per-callee, not per-caller: it changes how trait code invokes the annotated method, regardless of which method inside the trait does the calling.
Valid only on public, non-abstract static trait
methods. Applying it to an instance method, a private method, an
abstract method, or anything outside a trait is a compile-time error.