/**
* Tests if an entry exists in the cache.
*
* @param string $id The cache id of the entry to check for.
*
* @return bool TRUE if a cache entry exists for the given cache id, FALSE otherwise.
*/
protected function doContains($id)
{
$e = $this->getStopwatchEvent(__FUNCTION__);
$result = parent::doContains($id);
if ($e) {
$e->stop();
}
return $result;
}