fix shipment detail click in noti

lib/pages/fcs_shipment/model/fcs_shipment_model.dart

@@ -116,6 +116,21 @@ class FcsShipmentModel extends BaseModel {
     return fcsShipments;
   }
 
+  Future<FcsShipment> getFcsShipment(String id) async {
+    try {
+      var snap = await Firestore.instance
+          .collection("/$fcs_shipment_collection")
+          .document(id)
+          .get(source: Source.server);
+      var fcs = FcsShipment.fromMap(snap.data, snap.documentID);
+
+      return fcs;
+    } catch (e) {
+      log.warning("Error!! $e");
+    }
+    return null;
+  }
+
   void initUser(user) {
     super.initUser(user);
   }