Add nsi service handler

Hcs.Client/ClientApi/NsiApi/HcsMethodExportNsi.cs

@@ -0,0 +1,41 @@
+using System.Threading;
+using System.Threading.Tasks;
+
+using Nsi = Hcs.Service.Async.Nsi.v15_7_0_1;
+
+namespace Hcs.ClientApi.NsiApi
+{
+    /// <summary>
+    /// Операции экспорта данных справочников поставщика информации ГИС ЖКХ
+    /// </summary>
+    internal class HcsMethodExportNsi : HcsNsiMethod
+    {
+        public HcsMethodExportNsi(HcsClientConfig config) : base(config)
+        {
+            EnableMinimalResponseWaitDelay = true;
+            CanBeRestarted = true;
+        }
+
+        /// <summary>
+        /// Возвращает данные справочников поставщика информации
+        /// </summary>
+        public async Task<object[]> GetNsiItem(int regNum, CancellationToken token)
+        {
+            var request = new Nsi.exportDataProviderNsiItemRequest
+            {
+                Id = HcsConstants.SignedXmlElementId,
+                RegistryNumber = (Nsi.exportDataProviderNsiItemRequestRegistryNumber)regNum,
+                // http://open-gkh.ru/Nsi/exportDataProviderNsiItemRequest.html
+                version = "10.0.1.2"
+            };
+
+            var stateResult = await SendAndWaitResultAsync(request, async (portClient) =>
+            {
+                var response = await portClient.exportDataProviderNsiItemAsync(CreateRequestHeader(), request);
+                return response.AckRequest.Ack;
+            }, token);
+
+            return stateResult.Items;
+        }
+    }
+}