# Uses of Package
org.apache.tapestry5.internal.event

- Packages that use org.apache.tapestry5.internal.event
  Package | Description
  --- | ---
  org.apache.tapestry5.internal.services | [INTERNAL USE ONLY] internal service classes; API subject to change
  org.apache.tapestry5.internal.services.assets | [INTERNAL USE ONLY] asset support services; API subject to change

- Classes in org.apache.tapestry5.internal.event used by org.apache.tapestry5.internal.services
  Class | Description
  --- | ---
  InvalidationEventHubImpl | Base implementation class for classes (especially services) that need to manage a list of `InvalidationListener`s.

- Classes in org.apache.tapestry5.internal.event used by org.apache.tapestry5.internal.services.assets
  Class | Description
  --- | ---
  InvalidationEventHubImpl | Base implementation class for classes (especially services) that need to manage a list of `InvalidationListener`s.