Index: src/Plugins/Wti/Wti.Controller/PipingContextMenuStrip.cs
===================================================================
diff -u -r4eeb65b4d7a03f5151011baaa5bf461ee08baf63 -r5fc71a385897af92ccb092f2f969b5709afab85a
--- src/Plugins/Wti/Wti.Controller/PipingContextMenuStrip.cs	(.../PipingContextMenuStrip.cs)	(revision 4eeb65b4d7a03f5151011baaa5bf461ee08baf63)
+++ src/Plugins/Wti/Wti.Controller/PipingContextMenuStrip.cs	(.../PipingContextMenuStrip.cs)	(revision 5fc71a385897af92ccb092f2f969b5709afab85a)
@@ -7,9 +7,8 @@
 {
     internal class PipingContextMenuStrip : ContextMenuStrip
     {
-        private PipingData pipingData;
-
         public Action<PipingData> OnCalculationClick;
+        private readonly PipingData pipingData;
 
         public PipingContextMenuStrip(PipingData pipingData)
         {
@@ -19,7 +18,7 @@
             Items.Add(calculateItem);
         }
 
-        public sealed override ToolStripItemCollection Items
+        public override sealed ToolStripItemCollection Items
         {
             get
             {