How to use function giveRank?

Like the function name, it is created to give the rank assigned to the player

Example:
if($this->rankProvider->getRank($player) != "Admin")){
    echo "This player's rank is not Admin!";
}else{
    $this->rankProvider->giveRank($player, "Owner");
}

OR

if($this->rankProvider->getRank("ClickedTran") != "Admin"){
   echo "ClickedTran player rank is not Admin";
}else{
   $this->rankProvider->giveRank("ClickedTran", "Owner");
}

And that's it, quite simple, right?