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

        return $code;
    }