public static String extractUserNameFromScopedName(byte[] scopedNameBytes) throws UnsupportedEncodingException {
        String scopedUserName = new String(scopedNameBytes, "UTF8");
        return extractUserNameFromScopedName(scopedUserName);
    }
public static String extractUserNameFromScopedName ( byte [ ] scopedNameBytes ) throws UnsupportedEncodingException { String scopedUserName = new String ( scopedNameBytes , "UTF8" ) ; return extractUserNameFromScopedName ( scopedUserName ) ; }
See csiv2 spec 16.2.5 par. 63-64. We extract the username if any and un-escape any
escaped \ and @ characters.

@param scopedNameBytes
@return
@throws UnsupportedEncodingException