Attack Detection Event

Good day to everyone!
First of all I wanted to ask what GetEventTargetUnit() does? Is it like for the spell target event? thanks for any answers!
Now for my main question: When using the Unit Event EVENT_UNIT_DAMAGED, can I detect who damaged the triggering unit? GetAttacker() is obviously for EVENT_UNIT_ATTACKED so I can't use it.
If there's no way to detect the attacker then can you please recommend any attack detect system. Thanks, I'll just be using it for a spell.

1)
2) But il will fire for any damage (buff,attack,ect)

There are few decents detect attack system on this forum, but not perfects, cause limitations of the jass

Thanks troll! I'm so stupid I wasn't able to find that one on TESH lol. Thanks again!