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

Class Summary
AbstractItemDescriptor<T>: Abstract class for an `IItemDescriptor`.
DescriptorRegistryEventListener<T>: Base class for Descriptor Registry.
EMFCompareBuilderConfigurator: Engine provider.
ItemRegistry<T>: Registry holding `IItemDescriptor`.
ItemUtil: Util class for item.
LazyItemDescriptor<T>: Descriptor for an item.
WrapperItemDescriptor<T>: A `IItemDescriptor` that wrap one instance of an item and return the same item each time.