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diff --git a/release-notes/7.0/preview/api-diff/preview6/Microsoft.AspNetCore.App/7.0-preview6_Microsoft.AspNetCore.Mvc.Routing.md b/release-notes/7.0/preview/api-diff/preview6/Microsoft.AspNetCore.App/7.0-preview6_Microsoft.AspNetCore.Mvc.Routing.md
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+++ b/release-notes/7.0/preview/api-diff/preview6/Microsoft.AspNetCore.App/7.0-preview6_Microsoft.AspNetCore.Mvc.Routing.md
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+# Microsoft.AspNetCore.Mvc.Routing
+
+``` diff
+ namespace Microsoft.AspNetCore.Mvc.Routing {
+     [AttributeUsageAttribute(64, AllowMultiple=true, Inherited=true)]
+     public abstract class HttpMethodAttribute : Attribute, IActionHttpMethodProvider, IRouteTemplateProvider {
+-        public HttpMethodAttribute(IEnumerable<string> httpMethods, string? template);
++        public HttpMethodAttribute(IEnumerable<string> httpMethods, [StringSyntaxAttribute("Route")] string? template);
+-        public string Template { [CompilerGeneratedAttribute] get; }
++        [StringSyntaxAttribute("Route")]
++        public string Template { [CompilerGeneratedAttribute] get; }
+     }
+     public interface IRouteTemplateProvider {
+-        string Template { get; }
++        [StringSyntaxAttribute("Route")]
++        string Template { get; }
+     }
+ }
+```
+