- * Provides methods to manage policies of the Admission Control xApp, which
- * initially defines just one. All requests go via the A1 Mediatior.
+ * * Proxies calls from the front end to the AC xApp via the A1 Mediator API.
+ * All methods answer 502 on failure: <blockquote>HTTP server received an
+ * invalid response from a server it consulted when acting as a proxy or
+ * gateway.</blockquote>