[OperationContract]
[FaultContract(typeof(DbFaultContract))]
[FaultContract(typeof(ValidationFaultContract))]
[SwaggerWcfTag("Offers", false)]
[WebGet(UriTemplate = "/Mixtures?offerNumbers={offerNumbers}", ResponseFormat = WebMessageFormat.Json)]
[SwaggerWcfResponse(StatusCode = HttpStatusCode.OK, Description = "Success")]
[SwaggerWcfResponse(StatusCode = HttpStatusCode.InternalServerError, Description = "An unexpected error occurred while processing the request.", Type = typeof(JsonErrorMessage))]
[SwaggerWcfResponse(StatusCode = HttpStatusCode.BadRequest, Description = "Fault exception", Type = typeof(JsonErrorMessage))]
OfferedMixtureDefinitionContract[] GetMixtures(OfferNumbersContract offerNumbers)