public List <Supplier> PostArrayOfSuppliers(ODataActionParameters parameters)
        {
            parameters.Should().ContainKey("suppliers");
            parameters.Count.Should().Be(1);
            parameters["suppliers"].Should().BeAssignableTo <IEnumerable <SupplierDto> >();

            return(new List <Supplier>());
        }
        public IHttpActionResult Rate([FromODataUri] int key, ODataActionParameters parameters)
        {
            parameters.Should().ContainKey("Rating");

            return(StatusCode(HttpStatusCode.NoContent));
        }