# Package org.eclipse.emf.compare.rcp.extension

Class Summary
AbstractRegistryEventListener: Abstract utility class to listen to the `IExtensionRegistry`.
PluginClassDescriptor<T>: Simple utility class to create proxy of extension that are `instantiable`.

Enum Summary
AbstractRegistryEventListener.Action: Enumeration that says if the `IConfigurationElement` is to be added or removed from the `IExtensionRegistry`.