Handlers in datapack question

[aggonn]

Hello,

in a auto tvt patch i found this:
import net.sf.l2j.gameserver.model.L2Summon;

and it gives an error.
the handlers are placed in the dtapack, so how can i get this line working?

[_Blade_]

import net.sf.l2j.gameserver.model.actor.L2Summon;
but its still in core side