In other words, if the directions in the SAD together with the actual Use-Case Specification are sufficient for the developer to build the code of the use case, the Use-Case Realization is empty.

换句话说，如果SAD中的指示，连同实际的用例规格说明对开发人员来说足够构建用例的代码，那么用例实现就是空的。

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BOSTON Once the Boston Bruins' Gregory Campbell backhanded the puck into an empty net here at TD Garden on Saturday, finishing off a 3-1 victory and finishing off the Rangers in five games in these Eastern Conference semifinals, every Ranger delivered a different reaction to the realization that a season puffed with great expectations would end an empty husk.

WSJ: Mixed Emotions for Rangers as Season Ends