@Target(value=METHOD) @Retention(value=RUNTIME) public @interface Group
Identifies the key for a group.
@Group
should be used when you have control over the key class. For example:
class User { ... String office; ... int hashCode() { // Defines the hash for the key, normally used to determine location ... } // Override the location by specifying a group, all keys in the same // group end up with the same owner
Grouper
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