Group

Add item into given item group.

Require a @TargetId to specific the target group. ID set in the @ModId will be used as namespace if not specific.

@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.FIELD})
public @interface Group {
    /**
     * The target item group.
     *
     * @return {@link String }
     * @see Identifier
     */
    TargetId value();
}