dotnet-core/release-notes/3.0/api-diff/Asp.Net/3.0.0_Microsoft.AspNetCore.JsonPatch.md

Microsoft.AspNetCore.JsonPatch

 {
     namespace Microsoft.AspNetCore.JsonPatch.Internal {
         public class ListAdapter : IAdapter {
-            protected struct PositionInfo
+            protected readonly struct PositionInfo
         }
-        public struct ParsedPath
+        public readonly struct ParsedPath
     }
 }