public ReadOnlyCollection <Group> Get(long uid, bool extended = false, GroupsFilters filters = null, GroupsFields fields = null) { var parameters = new VkParameters { { "uid", uid }, { "extended", extended }, { "filter", filters }, { "fields", fields } }; VkResponseArray response = _vk.Call("groups.get", parameters); if (!extended) { return(response.Select(id => new Group { Id = id }).ToReadOnlyCollection()); } // в первой записи количество членов группы return(response.Skip(1).ToReadOnlyCollectionOf <Group>(r => r)); }