Success
The AlexaPreviewModeService function operation was successful.
Parameters
previewModeToken
The PreviewModeToken that shall be received as a successful result of AlexaPreviewModeService.registerDevice and AlexaPreviewModeService.refreshToken. It can be null
if a function does not return a PreviewModeToken on a successful result, as it is the case with AlexaPreviewModeService.deregisterDevice.