@NonNullApi @NonNullFields
See: Description
| Interface | Description | 
|---|---|
| Model | Java-5-specific interface that defines a holder for model attributes. | 
| Class | Description | 
|---|---|
| ConcurrentModel | Implementation of the  Modelinterface based on aConcurrentHashMapfor use in concurrent scenarios. | 
| ExtendedModelMap | |
| ModelMap | Implementation of  Mapfor use when building model data for use
 with UI tools. |