not only updatemodel, if you want to be able to validate then you have to
also call convert() manually from convertValue(), it gets ugly fast.
if we change to postorder then things work properly, deepest-nested
formcomponents get processed first, so if there is a formcomponentapnel that
encapsulates multiple form components, by the time it is processed so are
all its children.
Yep, I agree. But as HTML doesn't allow nested form elements,
validation and conversion is probably more of a theoretical issue.
Eelco
