OptionalcontextOptional context which is added from external resources.
OptionalhistoryThe history information to store as part of this request. This includes extra information that was provided to the user that was used in making the request.
OptionalidThe unique identifier for this request object. This value may be assigned by the client when a request is made but will be assigned by the service if one is not provided.
The input data to the back-end to make in this request.
This is the main interface that represents a request from a user sent to a back-end.