| Interface | Description | 
|---|---|
| ExtensionProviderListener<T extends ExtensionInfo> | 
| Class | Description | 
|---|---|
| CatalogItemFactories | |
| CatalogItemFactoryInfo | |
| ConnectionHelperInfo | |
| ConnectionHelpers | |
| ContextRecognizerInfo | |
| ContextRecognizers | |
| ExtensionInfo | |
| ExtensionMappingInfo | |
| ExtensionMappings | 
 Note: doesn't follow model of other extensions because this class is 
  used by ResourceTypeInfo, it is not a top-level extension object 
 | 
| ExtensionProvider<T extends ExtensionInfo> | |
| HookConstants | |
| RCAdapterInfo | |
| RCAdapters | |
| ResourceRecognizerInfo | |
| ResourceRecognizers | |
| ResourceTypeInfo | 
 Resource types can either be declared in terms of a class that implements
  
ResourceType, or they can be declared in
 terms of metadata. | 
| ResourceTypes |