caelum/vraptor4 — pull request #550 by Turini (2014-05-23 21:22:43+00:00)
Title: Avoiding memory leaks destroying Instances

according to the Weld's documentation:

> By default, each object obtained using Instance remains managed (is not released)
until the Instance object is destroyed. This can easily create a memory leak. Therefore,
the application should explicitly destroy obtained instances when it no longer needs by
calling the Instance.destroy() method.