src/ExtDirect/Cache/ExtCache.php
protected function get($key)
    {
        $cache = apc_fetch($this->getKey());
        if (!is_array($cache)) {
            return false;
        } else {
            if (isset($cache[$key])) {
                return $cache[$key];
            }
            return false;
        }
    }
protected function get($key)
    {
        $cache = apc_fetch($this->getKey());
        if (!is_array($cache)) {
            return false;
        } else {
            if (isset($cache[$key])) {
                return $cache[$key];
            }
            return false;
        }
    }
Returns a part of cached array

@param string $key cache category (action, namespace...)

@return bool