Magento: Block unsetChild for all children?

I am aware of:

<action method="unsetChild"><name>as</name></action>

Is it possible to remove all children in one line? e.g:

<action method="unsetChild"><name>*</name></action>

Or something similar..?

UPDATE - ANSWER:

<action method="unsetChildren"/>

Seems to do the trick reasonably well..