The example code listed here: https://docs.microsoft.com/en-us/dotnet/api/system.directoryservices.directorysearcher.attributescopequery?view=netframework-4.8#System_DirectoryServices_DirectorySearcher_AttributeScopeQuery namely the line: `DirectorySearcher src = new DirectorySearcher(group "(&(objectClass=user)(objectCategory=Person))"); ` is not properly formed C# code.