Lets gooooo

Models/SignRestriction.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Common
+{
+    public enum SignRestriction
+    {
+        Positive,
+        Negative,
+        Unrestricted,
+        Integer,
+        Binary
+    }
+}