Keys in MarshalledContext must provide a marshaller
and unmarshaller. The key id is used for marshalling and
unmarshalling and thus must be unique. The behavior of the
MarshalledContext when using two keys with the same key id
is undefined.
A unique identifier defining this marshaller. This is
transmitted together with marshalled values in order to
pick the the appropriate unmarshaller for a given value.
Keys in MarshalledContext must provide a marshaller and unmarshaller. The key
id
is used for marshalling and unmarshalling and thus must be unique. The behavior of the MarshalledContext when using two keys with the same keyid
is undefined.