public function prepareModifyVote (Vote $existVote) : void
    {
        try {
            $this->prepareVoteInput($existVote);
            $this->setStateToVote();

            if ($this->_Votes->isUsingHandler()) : 
                $this->_Votes[$this->getVoteKey($existVote)] = $existVote;
            endif;
        }
        catch (\Exception $e) {
            throw $e;
        }
    }