NestingCheckboxesV2.scala

case class NestingCheckboxes[C <: Messages[C]](... nestedWidgets: Map[String, Widget]) extends NestingMultipleChoice[C] {
  
  override val nestingMultipleChoiceWidget = new Checkbox(...) {
    override def render(form: Form, errors: ValidationErrors, requestInfo: RequestInfo)(...): Future[String] = {
      ...
      // pass result of templateChoices(form, errors, requestInfo) to my template and return the rendered result
    }
  }
}