dotnet-core/release-notes/6.0/preview/api-diff/preview1/.Net/6.0-preview1_System.Diagnostics.CodeAnalysis.md

System.Diagnostics.CodeAnalysis

 namespace System.Diagnostics.CodeAnalysis {
+    public sealed class RequiresAssemblyFilesAttribute : Attribute {
+        public RequiresAssemblyFilesAttribute();
+        public string Message { get; set; }
+        public string Url { get; set; }
+    }
 }