Twitter Util v21.5.0 Release Notes
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🆕 New Features
* util-validator: Introduce new library for case class validations (akin to Java bean validation) which follows the Jakarta Bean Validation specification (https://beanvalidation.org/) by wrapping the Hibernate Validator library and thus supports `jakarta.validation.Constraint` annotations and validators for annotating and validating fields of Scala case classes. ``PHAB_ID=D638603`` * util-app: Introduce a Java-friendly API `c.t.app.App#runOnExit(Runnable)` and `c.t.app.App#runOnExitLast(Runnable)` to allow Java 8 users to call `c.t.app.App#runOnExit` and `c.t.app.App#runOnExitLast` with lambda expressions. ``PHAB_ID=D511536``