*
* @param int|string $key What the contents in the cache are called
* @param string $group Where the cache contents are grouped
* @param bool $force Whether to force an update of the local cache from the persistent cache (default is false)
* @param bool &$found Whether key was found in the cache. Disambiguates a return of false, a storable value.
* @return bool|mixed False on failure to retrieve contents or the cache
*
* @param int|string $key What the contents in the cache are called
* @param string $group Where the cache contents are grouped
* @param bool $force Whether to force an update of the local cache from the persistent cache (default is false)
* @param bool &$found Whether key was found in the cache. Disambiguates a return of false, a storable value.
* @return bool|mixed False on failure to retrieve contents or the cache