/**
* Checks whether a string is a syntactically valid base Jabber ID (JID).
* A base JID won't include a resource specifier on the end; since we
* take it off when reading input we can't really use them reliably
* to direct outgoing messages yet (sorry guys!)
/**
* Checks whether a string is a syntactically valid base Jabber ID (JID).
* A base JID won't include a resource specifier on the end; since we
* take it off when reading input we can't really use them reliably
* to direct outgoing messages yet (sorry guys!)