/**
* @param string $url Url to use. If protocol-relative, will be expanded to an http:// URL
- * @param array $options (optional) extra params to pass (see Http::request())
+ * @param array $options (optional) extra params to pass (see HttpRequestFactory::create())
* @param string $caller The method making this request, for profiling
* @param Profiler|null $profiler An instance of the profiler for profiling, or null
* @throws Exception
* If a sink is already specified, this does nothing. This causes the 'sink' constructor
* option to override the 'callback' constructor option.
*
- * @param $callback|null $callback
+ * @param callable|null $callback
* @throws InvalidArgumentException
*/
protected function doSetCallback( $callback ) {