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## org.apache.tapestry5.services
Interface UpdateListener

All Known Subinterfaces:
  MessagesSource

All Known Implementing Classes:
  AbstractReloadableObjectCreator, ComponentInstantiatorSourceImpl, ComponentMessagesSourceImpl, ComponentTemplateSourceImpl, DynamicTemplateParserImpl, MessagesSourceImpl, ReloadableObjectCreator, ReloadableServiceImplementationObjectCreator, ResourceChangeTrackerImpl

    public interface UpdateListener

Interface for objects which can periodically check for updates.

Note that this interface has moved from module tapestry-core to tapestry-ioc, but has kept the same package (for backwards compatibility reasons).

Since:
  5.1.0.0
See Also:
  `UpdateListenerHub`

Method Summary
`void` | `checkForUpdates()` Invoked to force the receiver to check for updates to whatever underlying resources it makes use of.

Method Detail

### checkForUpdates

    void checkForUpdates()

  Invoked to force the receiver to check for updates to whatever underlying resources it makes use of.

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