code: func (strategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
  	newRuntimeClass := obj.(*node.RuntimeClass)
  	oldRuntimeClass := old.(*node.RuntimeClass)
  
  	_, _ = newRuntimeClass, oldRuntimeClass
  }
docs: // PrepareForUpdate clears fields that are not allowed to be set by end users on update.