protected function sizeMin($key, $lengthValue, $min, $not = true)
    {
        if ($lengthValue < $min && $not) {
            $this->addReturn($key, 'must', [ ':min' => $min ]);
        } elseif (!($lengthValue < $min) && !$not) {
            $this->addReturn($key, 'not', [ ':min' => $min ]);
        }
    }