https://learn.microsoft.com/de-de/dotnet/api/system.web.services.discovery.discoveryclientresultcollection?view=netframework-4.8.1
DiscoveryClientResultCollection Class (System.Web.Services.Discovery) | Microsoft Learn
Contains a collection of DiscoveryClientResult objects. This class cannot be inherited.
class systemweb servicesdiscoverymicrosoftlearn