protected function generateMethodsLines()
    {
        $code = array();
        foreach ($this->methods as $method) {
            $method->setIndentationString($this->getIndentationString());
            $method->setIndentationLevel($this->getIndentationLevel() + 1);
            $code[] = $method->generate();
            $code[] = null;
        }

        return $code;
    }