This specification defines a logout mechanism that uses front-channel communication via the User Agent between the OP and RPs being logged out that does not need an OpenID Provider iframe on Relying Party pages, as OpenID Connect Session Management 1.0 [OpenID.Session] does. Other protocols have used HTTP GETs to RP URLs that clear login state to achieve this; this specification does the same thing.
I suggest to implement helpers for OpenID Connect Front-Channel Logout
Related issues #292 #500 #560