private void GetGroups(IGroupsModel model, IMainPresenter presenter)
        {
            IMemberServices service = service = new MemberServices(ApplicationResource.BaseUrl, ApplicationResource.ApiVersion);
            service.GetGroupsUrl = ApplicationResource.ActionGetGroups;
            service.UserAgentVersion = ApplicationResource.UserAgent;
                IDataResponse response = service.GetGroups(new MemberData()
                {
                }, model.AccessToken);

                if (response.StatusCode == HttpStatusCode.OK)
                {
                    if (response.Data != null)
                    {
                        string data = response.Data.ToString();
                        dynamic jsonData = JsonConvert.DeserializeObject<dynamic>(data);

                        // clear existing data first
                        model.Groups.Clear();
                        int resultCount = jsonData["groups"].Count;
                        for (int i = 0; i < resultCount; i++)
                        {
                            dynamic groups = jsonData["groups"][i];
                            dynamic groupName = groups["group_name"];
                            dynamic groupId = groups["group_id"];
                            dynamic memberCount = groups["member_count"];

                            // update model
                            GroupListViewItemModel lvItem = new GroupListViewItemModel()
                            {
                                GroupName = groupName,
                                GroupId = groupId,
                                MemberCount = memberCount
                            };

                            model.Groups.Add(lvItem);
                        }
                        //if the group count is above limit - default 1000 we need to grab the cursor and call continue
                        bool hasMore = jsonData["has_more"];
                        string cursor = jsonData["cursor"];

                        while (hasMore)
                        {
                            service.GetGroupsUrl = ApplicationResource.ActionGetGroupsContinuation;
                            IDataResponse responseCont = service.GetGroups(new MemberData()
                            {
                                Cursor = cursor
                            }, model.AccessToken);

                            string dataCont = responseCont.Data.ToString();
                            dynamic jsonDataCont = JsonConvert.DeserializeObject<dynamic>(dataCont);

                            int resultContCount = jsonDataCont["groups"].Count;
                            for (int i = 0; i < resultContCount; i++)
                            {
                                dynamic groups = jsonDataCont["groups"][i];
                                dynamic groupName = groups["group_name"];
                                dynamic groupId = groups["group_id"];
                                dynamic memberCount = groups["member_count"];

                                // update model
                                GroupListViewItemModel lvItem = new GroupListViewItemModel()
                                {
                                    GroupName = groupName,
                                    GroupId = groupId,
                                    MemberCount = memberCount
                                };

                                model.Groups.Add(lvItem);
                            }
                            hasMore = jsonDataCont["has_more"];
                            cursor = jsonDataCont["cursor"];
                        }
                    }
                }
        }