s/PleaseRestartICE/ICERestartRequested/; add ICERestartPending property
s/PleaseRestartICE/ICERestartRequested/; add ICERestartPending property

This makes it sound more like a signal name.

ICERestartPending provides debugability, and is simpler than clearing the
RemoteCredentials property (my previous solution to this problem.

freedesktop-unofficial-mirror/telepathy__telepathy-spec,TelepathyIM/telepathy-spec