It also CARES about graceful hookremoval and resource cleanup.
它还关注挂钩的移除和资源的清除。
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I, of course, can handle this by using a JPA's EntityListeners annotation, which means I can hook into a removal event and use it to remove Runner instances.
The re-entrant cavity has a resilient portion to facilitate the removal of the building product without detrimental affect to the hook-like protuberance.