@Retention(RUNTIME)
@Target(METHOD)
@Incubating
public @interface Mutate

Denotes that the RuleSource method rule carrying this annotation mutates the rule subject.

Mutate rules execute after Defaults rules, but before Finalize rules. The first parameter of the rule is the rule subject, which is mutable for the duration of the rule.

Please see RuleSource for more information on method rules.