https://learn.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.mvc.infrastructure.actiondescriptorcollectionprovider.getchangetoken?view=aspnetcore-9.0
ActionDescriptorCollectionProvider.GetChangeToken Method (Microsoft.AspNetCore.Mvc.Infrastructure)...
Gets an IChangeToken that will be signaled after the ActionDescriptors collection has changed.
methodmicrosoftaspnetcoremvcinfrastructure