Cleaned up Hierarchy PR

src/Discord.Net.Core/Extensions/RoleExtensions.cs

@@ -0,0 +1,18 @@
+namespace Discord
+{
+    internal static class RoleExtensions
+    {
+        internal static int Compare(this IRole left, IRole right)
+        {
+            if (left == null)
+                return -1;
+            if (right == null)
+                return 1;
+            var result = left.Position.CompareTo(right.Position);
+            // As per Discord's documentation, a tie is broken by ID
+            if (result != 0)
+                return result;
+            return left.Id.CompareTo(right.Id);
+        }
+    }
+}