code: func IsDefaultAnnotation(obj metav1.ObjectMeta) bool {
  	if obj.Annotations[IsDefaultStorageClassAnnotation] == "true" {
  		return true
  	}
  	if obj.Annotations[BetaIsDefaultStorageClassAnnotation] == "true" {
  		return true
  	}
  
  	return false
  }
docs: // IsDefaultAnnotation returns a boolean if
  // the annotation is set
  // TODO: remove Beta when no longer needed