SEC14 — ReceivedCredentials.

Summary: I think we have a further problem representing the received
credentials from the server.

We have more than just two attributes on received credentials
which are more suited to the nature of a client, as opposed
to a server/target. We have

readonly attribute Credentials accepting_credentials;
readonly Security::DelegationState delegation_state;
readonly attribute Security::DelegationMode delegation_mode;
readonly attribute Security::AssociationOptions
association_options_used;

What do we do about delegation_state or delegation_mode
for received credentials from the server?