Javadoc
Remove any child components of the associated components which do not have corresponding tags as children of this
tag. This only happens when a view is being re-rendered and there are components in the view tree which don't
have corresponding JSP tags. Wrapping JSF tags in JSTL "c:if" statements is one way this can happen.
Attention: programmatically added components are are not affected by this: they will not be on the old list of
created components nor on the new list of created components, so nothing will happen to them.