private function getExposent($noteIndex)
    {
        $footNote = $this->getFootNote($noteIndex);
        if (empty($footNote)) {
            return null;
        }

        return $footNote;
    }
private function getExposent($noteIndex)
    {
        $footNote = $this->getFootNote($noteIndex);
        if (empty($footNote)) {
            return null;
        }

        return $footNote;
    }
private function getExposent ( $ noteIndex ) { $ footNote = $ this -> getFootNote ( $ noteIndex ) ; if ( empty ( $ footNote ) ) { return null ; } return $ footNote ; }
Retrieves exposent by note index

@param Integer $noteIndex
@return Sting | Null
Retrieves exposent by note index