keep/remove               -------------------------
   |---------------------------| MEMBER ONLY ON SERVER |(keep)
   |                           -------------------------
   |   create                  -------------------------
   | |-------------------------| MEMBER ONLY ON CLIENT |(create)
   | |                         -------------------------
---------------
| ROOT OBJECT |(keep/create/update)
---------------
   |
   | update
   |---------------------------------------
                                          |
                            -------------------------------
                            | MEMBER ON CLIENT AND SERVER |(keep/update)
                            -------------------------------
     keep/remove                          |
   |---------------------------------------
   |
--------------
| OTHER ROOT |(keep)
--------------