CustomPreview Properties | 
The CustomPreview type exposes the following members.
| Name | Description | |
|---|---|---|
| BodyGetterId | 
            If formatter returns true as a result of formatter.hasBody call then bodyGetterId will
            contain RemoteObjectId for the function that returns result of formatter.body(object, config) call.
            The result value is json ML array.
              | |
| Header | 
            The JSON-stringified result of formatter.header(object, config) call.
            It contains json ML array that represents RemoteObject.
              |