code: func init() {
  	design.Design = design.NewAPIDefinition()
  	design.GeneratedMediaTypes = make(design.MediaTypeRoot)
  	design.ProjectedMediaTypes = make(design.MediaTypeRoot)
  	dslengine.Register(design.Design)
  	dslengine.Register(design.GeneratedMediaTypes)
  }
docs: // Setup API DSL roots.