| Interface | Description | 
|---|---|
| ExternalizableMetadataProvider | 
 This interface represents a provider of externalizable metadata for a content. 
 | 
| Class | Description | 
|---|---|
| ExternalizableMetadataHelper | 
 Helper to get and set externalizable metadata of a content. 
 | 
| ExternalizableMetadataProviderExtensionPoint | 
 Extension point for  
ExternalizableMetadataProviders. | 
| Enum | Description | 
|---|---|
| ExternalizableMetadataProvider.ExternalizableMetadataStatus | 
 Enumeration for metadata status 
 |