messageKey static method
The mux key: the four sequence bytes of the link header, in hex. Ported
from OssMessageKeyProvider.
Implementation
static String messageKey(IsoMsg message) {
final Uint8List? header = message.isoHeader;
if (header == null) throw StateError("message has no link header");
return IsoUtil.hexString(OssAcqHeader.raw(header).sequence);
}