/// <summary>
        /// Gets a count of all of the shop's fulfillments.
        /// </summary>
        /// <param name="orderId">The order id to which the fulfillments belong.</param>
        /// <param name="options">Options for filtering the count.</param>
        /// <returns>The count of all fulfillments for the shop.</returns>
        public async Task<int> CountAsync(long orderId, ShopifyCountFilter options = null)
        {
            var req = RequestEngine.CreateRequest($"orders/{orderId}/fulfillments/count.json", Method.GET);

            //Add optional parameters to request
            if (options != null) req.Parameters.AddRange(options.ToParameters(ParameterType.GetOrPost));

            var responseObject = await RequestEngine.ExecuteRequestAsync(_RestClient, req);

            //Response looks like { "count" : 123 }. Does not warrant its own class.
            return responseObject.Value<int>("count");
        }
        /// <summary>
        /// Gets a count of all of the shop's fulfillments.
        /// </summary>
        /// <param name="orderId">The order id to which the fulfillments belong.</param>
        /// <param name="filter">Options for filtering the count.</param>
        /// <returns>The count of all fulfillments for the shop.</returns>
        public async Task <int> CountAsync(long orderId, ShopifyCountFilter filter = null)
        {
            var req = RequestEngine.CreateRequest($"orders/{orderId}/fulfillments/count.json", Method.GET);

            //Add optional parameters to request
            if (filter != null)
            {
                req.Parameters.AddRange(filter.ToParameters(ParameterType.GetOrPost));
            }

            var responseObject = await RequestEngine.ExecuteRequestAsync(_RestClient, req);

            //Response looks like { "count" : 123 }. Does not warrant its own class.
            return(responseObject.Value <int>("count"));
        }