code: func DefaultAPIResourceConfigSource() *serverstorage.ResourceConfig {
  	ret := serverstorage.NewResourceConfig()
  	// NOTE: GroupVersions listed here will be enabled by default. Don't put alpha versions in the list.
  	ret.EnableVersions(
  		v1.SchemeGroupVersion,
  		v1beta1.SchemeGroupVersion,
  	)
  
  	return ret
  }
docs: // DefaultAPIResourceConfigSource returns default configuration for an APIResource.