pub fn parse_jid_ref(s: &str) -> Option<JidRef<'_>>Expand description
Parse the allocation-free JID shapes into the same borrowed type used by the binary decoder.
Returns None when the string needs Jid’s compatibility fallback or
names an unknown server. Callers that must accept those edge cases can fall
back to s.parse::<Jid>(); normal user/group/LID/bot JIDs stay borrowed.