If we want the `reason` bit to be flexible, why not make it some combination of a text label and a registry, perhaps similar to stanza errors.
Maybe reuse the features (XEP 30, Disco) registry, like: <decloak> <reason ver="urn:xmpp:jingle:apps:rtp:audio">Voice call</reason> </decloak> -- Regards, Kim "Zash" Alvefur
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