| interface  | EJBRef | Represents <ejb-ref> and <ejb-local-ref>. | 
| interface  | EnvEntry | Represents <env-entry>. | 
| interface  | MessageDestinationRef | Represents <message-destination-ref>. | 
| interface  | PersistenceContextRef | Represents <persistence-context-ref>. | 
| interface  | PersistenceRef | Represents common elements between <persistence-context-ref> and
 <persistence-unit-ref>. | 
| interface  | PersistenceUnitRef | Represents <persistence-unit-ref>. | 
| interface  | ResourceEnvRef | Represents <resource-env-ref>. | 
| interface  | ResourceGroup | Represents the resourceGroup type from the javaee XSD. | 
| interface  | ResourceRef | Represents <resource-ref>. |