+-------------------------+
                                | Root Collection         |
                                |  bindings:              |
                                |  CollX          CollA   |
                                +-------------------------+
                                    /               \
                                   /                 \
                                  /                   \
                                 /                     \
+-------------------------------+                  +-------------------------------+
| Collection C1                 |<-------+         | Collection C3                 |<-------+
| bindings:                     |        |         | bindings:                     |        |
| x.gif      CollY              |        |         | x.gif      CollY              |        |
+-------------------------------+        |         +-------------------------------+        |
    |          \                         |             |          \                         |
    |           \         (creates loop) |             |           \         (creates loop) |
    |            \                       |             |            \                       |  
+-------------+   +------------------+   |         +-------------+   +------------------+   |
| Resource R1 |   | Collection C2    |   |         | Resource R3 |   | Collection C4    |   |
+-------------+   | bindings:        |   |         +-------------+   | bindings:        |   |
                  | y.gif     CollZ  |   |                           | y.gif     CollZ  |   |
                  +------------------+   |                           +------------------+   |
                      |         |        |                               |         |        |
                      |         +--------+                               |         +--------+
                      |                                                  | 
                  +-------------+                                    +-------------+
                  | Resource R2 |                                    | Resource R4 | 
                  +-------------+                                    +-------------+