modifyColumn deprecated, why?

modifyColumn has only been deprecated but throws an Exception in 2.0.5 when used.

Why has modifyColumn been deprecated and been replaced by a tag with less functionality?

If I want to perform a simple modification like setting nullable to false, how can this be done?

modifyColumn is still in the manual while it’s replacement modifyDataTaype is not listed in the TOC.

Thanks  Hans