src/BaseConnector.php
protected function getCache(string $key) {
        $cacheUtil = $this->getCacheUtil();

        if($cacheUtil === null) {
            return null;
        }

        return $this->cacheUtil->get($key);
    }
protected function getCache(string $key) {
        $cacheUtil = $this->getCacheUtil();

        if($cacheUtil === null) {
            return null;
        }

        return $this->cacheUtil->get($key);
    }
@param string $key

@return mixed