var clientContext = CreateClientContext(targetUrl);

                var web = clientContext.Web;

                clientContext.Load(web, w => w.Title, w => w.Id, w => w.Url, w => w.Language,

                    w => w.AssociatedMemberGroup, w => w.AssociatedOwnerGroup, w => w.AssociatedVisitorGroup);

                clientContext.ExecuteQuery();

                var associatedOwnerGroup = web.AssociatedOwnerGroup;

                var associatedMemberGroup = web.AssociatedMemberGroup;

                var associatedVisitorGroup = web.AssociatedVisitorGroup;