Note - This pattern can be applied regardless of whether the service contract is decoupled.

不论服务是否解耦，该模式都能被应用。

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The service contract, a SOA pattern according to Figure 3, is the SOA instantiation of an interface; hence, the general issue called "Interface signature?"

根据图3所示的SOA模式，服务契约是SOA接口的实例化；因此，根据图2，通用问题“接口签名是什么？

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Using annotations, Contract4J defines a pattern-like protocol, a kind-of interface, for expressing contract information.

使用标注，Contract4J 定义了模式形式的协议，即一种接口，用来表达合约信息。

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Whoever signs the contract first sets the pattern for the rest of the industry.

FORBES: The Union Is Strong, The Automakers Are Weak

Then it takes the contract to the others, who are expected to match the pattern.

FORBES: Pick Me! Pick Me!