server/biz/CoreBizObjectAttribute.cs

@@ -0,0 +1,22 @@
+using System;
+
+namespace Sockeye.Biz
+{
+    /// <summary>
+    /// Marker attribute indicating that an object is a core business object
+    /// In other words a real world business relevant object and not a utility or internal type of object
+    /// something that would be worked with by users in the UI for business purposes
+    /// This is used to indicate that an object supports these features:
+    ///     PickList selectable (has picklist)
+    ///     Attachable (can attach to it)
+    ///     Reviewable (can set a review on it)
+    ///     ETC
+    /// Used in <see cref="SockType"/>
+    /// </summary>
+    [AttributeUsage(AttributeTargets.All)]
+    public class CoreBizObjectAttribute : Attribute
+    {
+        //No code required, it's just a marker     
+        //https://docs.microsoft.com/en-us/dotnet/standard/attributes/writing-custom-attributes
+    }
+}//eons