[TYPO3-templavoila] How to "know" when unlinking?

[Rasmus Jørgensen]

Hi
When deleting a element from the list module I get the status "delete" 
in processDatamap hooks. When unlink'ing from TV Page module I get 
"update". So my question is:

How do I test from a processDatamap hook that an element has been unlinked?

Regards
Rasmus