| Interface | Description | 
|---|---|
| ParameterizedToolingModelBuilder<T> | A  ToolingModelBuilderwhich can be parametrized by the client. | 
| ToolingModelBuilder | Responsible for building tooling models to return to the tooling API client. | 
| ToolingModelBuilderRegistry | A registry of tooling model builders. | 
| Exception | Description | 
|---|---|
| UnknownModelException | Thrown when an unknown tooling model is requested. |