# Package org.qi4j.api.concern

Concern API.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  ConcernDescriptor | Concern descriptor.
  ConcernsDescriptor | Concerns descriptor.

- Class Summary
  Class | Description
  --- | ---
  ConcernOf<T> | Base class for Concerns.
  GenericConcern | Base class for generic Concerns.

- Annotation Types Summary
  Annotation Type | Description
  --- | ---
  Concerns | This annotation is used by composites and mixins to declare what Concerns should be applied to the type or specific method.

## Package org.qi4j.api.concern Description

## Concern API.