模型工件引用经常被通过复制或转变模型本身而解决，使其用于不同的工具或领域。
Often model artifact references are resolved by copying or transforming the models themselves for consumption in a different tool or domain.
在其他生产应用程序中，跨文档共同引用可能非常复杂，实际上这个领域还有待研究。
In other production applications, cross-document co-reference can be quite complex, and is in fact an area of current research.
你可能必须实现一个特殊的Web服务来获取存储在领域模型中的客户引用。
You might have to implement a special web service to get the customer reference stored in the domain model.
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