IServiceTracker (CMS API 15.5.0 API)

Type Parameters:

S - the type of the service to track

All Superinterfaces:

org.apache.wicket.util.io.IClusterable, Serializable

All Known Implementing Classes:

AbstractRenderService.ExtensionPoint, ListRenderService.ExtensionPoint, RenderService.ExtensionPoint, ServiceTracker
```
public interface IServiceTracker<S extends org.apache.wicket.util.io.IClusterable>
extends org.apache.wicket.util.io.IClusterable
```
The service tracker interface makes service registry events accessible to plugins. This is particularly useful for plugins that provide extension points. Those extension points will be populated by other plugins by their registration of additional services. A service tracker allows the extension point provider by responding in an appropriate manner.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addService(S service, String name)`	A service is being registered.
`void`	`removeService(S service, String name)`	A service is being unregistered.

- Method Detail
  - addService
```
void addService(S service,
                String name)
```
    A service is being registered.
    
    Parameters:
    
    service - the service that is registered
    
    name - the name that was used to register the service tracker
  - removeService
```
void removeService(S service,
                   String name)
```
    A service is being unregistered.
    
    Parameters:
    
    service - the service that is unregistered
    
    name - the name that was used to register the service tracker