https://learn.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.http.httpresults.acceptedatroute-1.microsoft-aspnetcore-http-metadata-iendpointmetadataprovider-populatemetadata?view=aspnetcore-10.0
AcceptedAtRouteTValue.IEndpointMetadataProvider.PopulateMetadata Method...
Populates metadata for the related Endpoint and MethodInfo.
method