@Target(value=TYPE) @Retention(value=RUNTIME) @Inherited @Documented public @interface ServiceMode
Provider实现是否希望使用整个协议消息或仅与协议消息有效载荷一起工作。 
      | Modifier and Type | Optional Element and Description | 
|---|---|
| Service.Mode | value
              服务模式 
             | 
public abstract Service.Mode value
PAYLOAD表示Provider只希望与协议消息有效载荷一起使用。 
           MESSAGE表示Provider实现希望使用整个协议消息。 
           Submit a bug or feature 
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