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kotlinlang

Hi folks, 

I've got a question about annotations, in particular is it possible to group / collect annotations on a single annotation class? Something like:

```
@RunWith(SpringJUnit4ClassRunner::class)
@SpringApplicationConfiguration(classes = arrayOf(SomeRandomSpringConfig::class))
@ActiveProfiles("profile")
@Target(CLASS)
annotation class GroupOfAnnotations
```

Such that it can then be used on another class

```
@GroupOfAnnotations
class Wibble ....
```

Groovy (<http://docs.groovy-lang.org/latest/html/api/groovy/transform/AnnotationCollector.html>) requires the `@AnnotationCollector` to achieve this - does Kotlin require something similar?