The most general message
An abstract property attached to a message.
Extend it to provide your own delivery information.
This resource represents a service, a client etc.,
in general, some entity able to process communication messages.
A request for information
Identifies the recipient of the message
Identifies the sender of the message
Identifies the original request
A reply to an information request
A successful reply to an information request
An error delivered to an information request
A human readable error description
A warning can be attached to any Message