In an interview I heard " Examiner: May I see your passport please ? Student: Yes, here you are. " Why wasn't the answer ', Yes, here it is. '? Is the full version of the answer " Yes, here you are going to have it" ?
"Here you are" is a very common saying when handing something to someone. There is no "full version".
here you are
(informal) used when you are giving something to somebody